/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.xowa.mediawiki.includes; import gplx.*; import gplx.xowa.*; import gplx.xowa.mediawiki.*;
import gplx.xowa.mediawiki.includes.utls.*;
/**
* Represents a title within MediaWiki.
* Optionally may contain an interwiki designation or namespace.
* @note This class can fetch various kinds of data from the database;
*       however, it does so inefficiently.
* @note Consider using a TitleValue Object instead. TitleValue is more lightweight
*       and does not rely on global state or the database.
*/
public class Xomw_Title {
//		/** @var HashBagOStuff */
//		static private $titleCache = null;
//
//		/**
//		* Title::newFromText maintains a cache to avoid expensive re-normalization of
//		* commonly used titles. On a batch operation this can become a memory leak
//		* if not bounded. After hitting this many titles reset the cache.
//		*/
//		static final CACHE_MAX = 1000;
//
//		/**
//		* Used to be GAID_FOR_UPDATE define. Used with getArticleID() and friends
//		* to use the master DB
//		*/
//		static final GAID_FOR_UPDATE = 1;
//
//		/**
//		* @name Private member variables
//		* Please use the accessor functions instead.
//		* @private
//		*/
//		// @{
//
//		/** @var String Text form (spaces not underscores) of the main part */
//		public $mTextform = '';
//
//		/** @var String URL-encoded form of the main part */
//		public $mUrlform = '';

	/** @var String Main part with underscores */
	// XO: EX: "Help_talk:A_b" . "A_b"
	public byte[] mDbkeyform = Bry_.Empty;

//		/** @var String Database key with the initial letter in the case specified by the user */
//		protected $mUserCaseDBKey;
//
//		/** @var int Namespace index, i.e. one of the NS_xxxx constants */
//		public $mNamespace = NS_MAIN;
//
//		/** @var String Interwiki prefix */
//		public $mInterwiki = '';
//
//		/** @var boolean Was this Title created from a String with a local interwiki prefix? */
//		private $mLocalInterwiki = false;
//
//		/** @var String Title fragment (i.e. the bit after the #) */
//		public $mFragment = '';
//
//		/** @var int Article ID, fetched from the link cache on demand */
//		public $mArticleID = -1;
//
//		/** @var boolean|int ID of most recent revision */
//		protected $mLatestID = false;
//
//		/**
//		* @var boolean|String ID of the page's content model, i.e. one of the
//		*   CONTENT_MODEL_XXX constants
//		*/
//		private $mContentModel = false;
//
//		/**
//		* @var boolean If a content model was forced via setContentModel()
//		*   this will be true to avoid having other code paths reset it
//		*/
//		private $mForcedContentModel = false;
//
//		/** @var int Estimated number of revisions; null of not loaded */
//		private $mEstimateRevisions;
//
//		/** @var array Array of groups allowed to edit this article */
//		public $mRestrictions = [];
//
//		/** @var String|boolean */
//		protected $mOldRestrictions = false;
//
//		/** @var boolean Cascade restrictions on this page to included templates and images? */
//		public $mCascadeRestriction;
//
//		/** Caching the results of getCascadeProtectionSources */
//		public $mCascadingRestrictions;
//
//		/** @var array When do the restrictions on this page expire? */
//		protected $mRestrictionsExpiry = [];
//
//		/** @var boolean Are cascading restrictions in effect on this page? */
//		protected $mHasCascadingRestrictions;
//
//		/** @var array Where are the cascading restrictions coming from on this page? */
//		public $mCascadeSources;
//
//		/** @var boolean Boolean for initialisation on demand */
//		public $mRestrictionsLoaded = false;
//
//		/** @var String Text form including namespace/interwiki, initialised on demand */
//		protected $mPrefixedText = null;
//
//		/** @var mixed Cached value for getTitleProtection (create protection) */
//		public $mTitleProtection;
//
//		/**
//		* @var int Namespace index when there is no namespace. Don't change the
//		*   following default, NS_MAIN is hardcoded in several places. See bug 696.
//		*   Zero except in {{transclusion}} tags.
//		*/
//		public $mDefaultNamespace = NS_MAIN;
//
//		/** @var int The page length, 0 for special pages */
//		protected $mLength = -1;
//
//		/** @var null Is the article at this title a redirect? */
//		public $mRedirect = null;
//
//		/** @var array Associative array of user ID . timestamp/false */
//		private $mNotificationTimestamp = [];
//
//		/** @var boolean Whether a page has any subpages */
//		private $mHasSubpages;
//
//		/** @var boolean The (String) language code of the page's language and content code. */
//		private $mPageLanguage = false;
//
//		/** @var String|boolean|null The page language code from the database, null if not saved in
//		* the database or false if not loaded, yet. */
//		private $mDbPageLanguage = false;
//
//		/** @var TitleValue A corresponding TitleValue Object */
//		private $mTitleValue = null;
//
//		/** @var boolean Would deleting this page be a big deletion? */
//		private $mIsBigDeletion = null;
//		// @}
//
//		/**
//		* B/C kludge: provide a TitleParser for use by Title.
//		* Ideally, Title would have no methods that need this.
//		* Avoid usage of this singleton by using TitleValue
//		* and the associated services when possible.
//		*
//		* @return TitleFormatter
//		*/
//		private static function getTitleFormatter() {
//			return MediaWikiServices::getInstance().getTitleFormatter();
//		}
//
//		/**
//		* B/C kludge: provide an InterwikiLookup for use by Title.
//		* Ideally, Title would have no methods that need this.
//		* Avoid usage of this singleton by using TitleValue
//		* and the associated services when possible.
//		*
//		* @return InterwikiLookup
//		*/
//		private static function getInterwikiLookup() {
//			return MediaWikiServices::getInstance().getInterwikiLookup();
//		}
//
//		/**
//		* @access protected
//		*/
//		function __construct() {
//		}
//
//		/**
//		* Create a new Title from a prefixed DB key
//		*
//		* @param String $key The database key, which has underscores
//		*	instead of spaces, possibly including namespace and
//		*	interwiki prefixes
//		* @return Title|null Title, or null on an error
//		*/
//		public static function newFromDBkey($key) {
//			$t = new Title();
//			$t.mDbkeyform = $key;
//
//			try {
//				$t.secureAndSplit();
//				return $t;
//			} catch (MalformedTitleException $ex) {
//				return null;
//			}
//		}
//
//		/**
//		* Create a new Title from a TitleValue
//		*
//		* @param TitleValue $titleValue Assumed to be safe.
//		*
//		* @return Title
//		*/
//		public static function newFromTitleValue(TitleValue $titleValue) {
//			return self::newFromLinkTarget($titleValue);
//		}
//
//		/**
//		* Create a new Title from a LinkTarget
//		*
//		* @param LinkTarget $linkTarget Assumed to be safe.
//		*
//		* @return Title
//		*/
//		public static function newFromLinkTarget(LinkTarget $linkTarget) {
//			if ($linkTarget instanceof Title) {
//				// Special case if it's already a Title Object
//				return $linkTarget;
//			}
//			return self::makeTitle(
//				$linkTarget.getNamespace(),
//				$linkTarget.getText(),
//				$linkTarget.getFragment(),
//				$linkTarget.getInterwiki()
//			);
//		}
//
//		/**
//		* Create a new Title from text, such as what one would find in a link. De-
//		* codes any HTML entities in the text.
//		*
//		* @param String|int|null $text The link text; spaces, prefixes, and an
//		*   initial ':' indicating the main namespace are accepted.
//		* @param int $defaultNamespace The namespace to use if none is specified
//		*   by a prefix.  If you want to force a specific namespace even if
//		*   $text might begin with a namespace prefix, use makeTitle() or
//		*   makeTitleSafe().
//		* @throws InvalidArgumentException
//		* @return Title|null Title or null on an error.
//		*/
//		public static function newFromText($text, $defaultNamespace = NS_MAIN) {
//			// DWIM: Integers can be passed in here when page titles are used as array keys.
//			if ($text !== null && !is_string($text) && !is_int($text)) {
//				throw new InvalidArgumentException('$text must be a String.');
//			}
//			if ($text === null) {
//				return null;
//			}
//
//			try {
//				return Title::newFromTextThrow(strval($text), $defaultNamespace);
//			} catch (MalformedTitleException $ex) {
//				return null;
//			}
//		}
//
//		/**
//		* Like Title::newFromText(), but throws MalformedTitleException when the title is invalid,
//		* rather than returning null.
//		*
//		* The exception subclasses encode detailed information about why the title is invalid.
//		*
//		* @see Title::newFromText
//		*
//		* @since 1.25
//		* @param String $text Title text to check
//		* @param int $defaultNamespace
//		* @throws MalformedTitleException If the title is invalid
//		* @return Title
//		*/
//		public static function newFromTextThrow($text, $defaultNamespace = NS_MAIN) {
//			if (is_object($text)) {
//				throw new MWException('$text must be a String, given an Object');
//			}
//
//			$titleCache = self::getTitleCache();
//
//			// Wiki pages often contain multiple links to the same page.
//			// Title normalization and parsing can become expensive on pages with many
//			// links, so we can save a little time by caching them.
//			// In theory these are value objects and won't get changed...
//			if ($defaultNamespace == NS_MAIN) {
//				$t = $titleCache.get($text);
//				if ($t) {
//					return $t;
//				}
//			}
//
//			// Convert things like &eacute; &#257; or &#x3017; into normalized (bug 14952) text
//			$filteredText = Sanitizer::decodeCharReferencesAndNormalize($text);
//
//			$t = new Title();
//			$t.mDbkeyform = strtr($filteredText, ' ', '_');
//			$t.mDefaultNamespace = intval($defaultNamespace);
//
//			$t.secureAndSplit();
//			if ($defaultNamespace == NS_MAIN) {
//				$titleCache.set($text, $t);
//			}
//			return $t;
//		}
//
//		/**
//		* THIS IS NOT THE FUNCTION YOU WANT. Use Title::newFromText().
//		*
//		* Example of wrong and broken code:
//		* $title = Title::newFromURL($wgRequest.getVal('title'));
//		*
//		* Example of right code:
//		* $title = Title::newFromText($wgRequest.getVal('title'));
//		*
//		* Create a new Title from URL-encoded text. Ensures that
//		* the given title's length does not exceed the maximum.
//		*
//		* @param String $url The title, as might be taken from a URL
//		* @return Title|null The new Object, or null on an error
//		*/
//		public static function newFromURL($url) {
//			$t = new Title();
//
//			# For compatibility with old buggy URLs. "+" is usually not valid in titles,
//			# but some URLs used it as a space replacement and they still come
//			# from some external search tools.
//			if (strpos(self::legalChars(), '+') === false) {
//				$url = strtr($url, '+', ' ');
//			}
//
//			$t.mDbkeyform = strtr($url, ' ', '_');
//
//			try {
//				$t.secureAndSplit();
//				return $t;
//			} catch (MalformedTitleException $ex) {
//				return null;
//			}
//		}
//
//		/**
//		* @return HashBagOStuff
//		*/
//		private static function getTitleCache() {
//			if (self::$titleCache == null) {
//				self::$titleCache = new HashBagOStuff([ 'maxKeys' => self::CACHE_MAX ]);
//			}
//			return self::$titleCache;
//		}
//
//		/**
//		* Returns a list of fields that are to be selected for initializing Title
//		* objects or LinkCache entries. Uses $wgContentHandlerUseDB to determine
//		* whether to include page_content_model.
//		*
//		* @return array
//		*/
//		protected static function getSelectFields() {
//			global $wgContentHandlerUseDB, $wgPageLanguageUseDB;
//
//			$fields = [
//				'page_namespace', 'page_title', 'page_id',
//				'page_len', 'page_is_redirect', 'page_latest',
//			];
//
//			if ($wgContentHandlerUseDB) {
//				$fields[] = 'page_content_model';
//			}
//
//			if ($wgPageLanguageUseDB) {
//				$fields[] = 'page_lang';
//			}
//
//			return $fields;
//		}
//
//		/**
//		* Create a new Title from an article ID
//		*
//		* @param int $id The page_id corresponding to the Title to create
//		* @param int $flags Use Title::GAID_FOR_UPDATE to use master
//		* @return Title|null The new Object, or null on an error
//		*/
//		public static function newFromID($id, $flags = 0) {
//			$db = ($flags & self::GAID_FOR_UPDATE) ? wfGetDB(DB_MASTER) : wfGetDB(DB_REPLICA);
//			$row = $db.selectRow(
//				'page',
//				self::getSelectFields(),
//				[ 'page_id' => $id ],
//				__METHOD__
//			);
//			if ($row !== false) {
//				$title = Title::newFromRow($row);
//			} else {
//				$title = null;
//			}
//			return $title;
//		}
//
//		/**
//		* Make an array of titles from an array of IDs
//		*
//		* @param int[] $ids Array of IDs
//		* @return Title[] Array of Titles
//		*/
//		public static function newFromIDs($ids) {
//			if (!count($ids)) {
//				return [];
//			}
//			$dbr = wfGetDB(DB_REPLICA);
//
//			$res = $dbr.select(
//				'page',
//				self::getSelectFields(),
//				[ 'page_id' => $ids ],
//				__METHOD__
//			);
//
//			$titles = [];
//			foreach ($res as $row) {
//				$titles[] = Title::newFromRow($row);
//			}
//			return $titles;
//		}
//
//		/**
//		* Make a Title Object from a DB row
//		*
//		* @param stdClass $row Object database row (needs at least page_title,page_namespace)
//		* @return Title Corresponding Title
//		*/
//		public static function newFromRow($row) {
//			$t = self::makeTitle($row.page_namespace, $row.page_title);
//			$t.loadFromRow($row);
//			return $t;
//		}
//
//		/**
//		* Load Title Object fields from a DB row.
//		* If false is given, the title will be treated as non-existing.
//		*
//		* @param stdClass|boolean $row Database row
//		*/
//		public function loadFromRow($row) {
//			if ($row) { // page found
//				if (isset($row.page_id)) {
//					$this.mArticleID = (int)$row.page_id;
//				}
//				if (isset($row.page_len)) {
//					$this.mLength = (int)$row.page_len;
//				}
//				if (isset($row.page_is_redirect)) {
//					$this.mRedirect = (boolean)$row.page_is_redirect;
//				}
//				if (isset($row.page_latest)) {
//					$this.mLatestID = (int)$row.page_latest;
//				}
//				if (!$this.mForcedContentModel && isset($row.page_content_model)) {
//					$this.mContentModel = strval($row.page_content_model);
//				} elseif (!$this.mForcedContentModel) {
//					$this.mContentModel = false; # initialized lazily in getContentModel()
//				}
//				if (isset($row.page_lang)) {
//					$this.mDbPageLanguage = (String)$row.page_lang;
//				}
//				if (isset($row.page_restrictions)) {
//					$this.mOldRestrictions = $row.page_restrictions;
//				}
//			} else { // page not found
//				$this.mArticleID = 0;
//				$this.mLength = 0;
//				$this.mRedirect = false;
//				$this.mLatestID = 0;
//				if (!$this.mForcedContentModel) {
//					$this.mContentModel = false; # initialized lazily in getContentModel()
//				}
//			}
//		}
//
//		/**
//		* Create a new Title from a namespace index and a DB key.
//		* It's assumed that $ns and $title are *valid*, for instance when
//		* they came directly from the database or a special page name.
//		* For convenience, spaces are converted to underscores so that
//		* eg user_text fields can be used directly.
//		*
//		* @param int $ns The namespace of the article
//		* @param String $title The unprefixed database key form
//		* @param String $fragment The link fragment (after the "#")
//		* @param String $interwiki The interwiki prefix
//		* @return Title The new Object
//		*/
//		public static function makeTitle($ns, $title, $fragment = '', $interwiki = '') {
//			$t = new Title();
//			$t.mInterwiki = $interwiki;
//			$t.mFragment = $fragment;
//			$t.mNamespace = $ns = intval($ns);
//			$t.mDbkeyform = strtr($title, ' ', '_');
//			$t.mArticleID = ($ns >= 0) ? -1 : 0;
//			$t.mUrlform = wfUrlencode($t.mDbkeyform);
//			$t.mTextform = strtr($title, '_', ' ');
//			$t.mContentModel = false; # initialized lazily in getContentModel()
//			return $t;
//		}
//
//		/**
//		* Create a new Title from a namespace index and a DB key.
//		* The parameters will be checked for validity, which is a bit slower
//		* than makeTitle() but safer for user-provided data.
//		*
//		* @param int $ns The namespace of the article
//		* @param String $title Database key form
//		* @param String $fragment The link fragment (after the "#")
//		* @param String $interwiki Interwiki prefix
//		* @return Title|null The new Object, or null on an error
//		*/
//		public static function makeTitleSafe($ns, $title, $fragment = '', $interwiki = '') {
//			if (!MWNamespace::exists($ns)) {
//				return null;
//			}
//
//			$t = new Title();
//			$t.mDbkeyform = Title::makeName($ns, $title, $fragment, $interwiki, true);
//
//			try {
//				$t.secureAndSplit();
//				return $t;
//			} catch (MalformedTitleException $ex) {
//				return null;
//			}
//		}
//
//		/**
//		* Create a new Title for the Main Page
//		*
//		* @return Title The new Object
//		*/
//		public static function newMainPage() {
//			$title = Title::newFromText(wfMessage('mainpage').inContentLanguage().text());
//			// Don't give fatal errors if the message is broken
//			if (!$title) {
//				$title = Title::newFromText('Main Page');
//			}
//			return $title;
//		}
//
//		/**
//		* Get the prefixed DB key associated with an ID
//		*
//		* @param int $id The page_id of the article
//		* @return Title|null An Object representing the article, or null if no such article was found
//		*/
//		public static function nameOf($id) {
//			$dbr = wfGetDB(DB_REPLICA);
//
//			$s = $dbr.selectRow(
//				'page',
//				[ 'page_namespace', 'page_title' ],
//				[ 'page_id' => $id ],
//				__METHOD__
//			);
//			if ($s === false) {
//				return null;
//			}
//
//			$n = self::makeName($s.page_namespace, $s.page_title);
//			return $n;
//		}
//
//		/**
//		* Get a regex character class describing the legal characters in a link
//		*
//		* @return String The list of characters, not delimited
//		*/
//		public static function legalChars() {
//			global $wgLegalTitleChars;
//			return $wgLegalTitleChars;
//		}
//
//		/**
//		* Returns a simple regex that will match on characters and sequences invalid in titles.
//		* Note that this doesn't pick up many things that could be wrong with titles, but that
//		* replacing this regex with something valid will make many titles valid.
//		*
//		* @deprecated since 1.25, use MediaWikiTitleCodec::getTitleInvalidRegex() instead
//		*
//		* @return String Regex String
//		*/
//		static function getTitleInvalidRegex() {
//			wfDeprecated(__METHOD__, '1.25');
//			return MediaWikiTitleCodec::getTitleInvalidRegex();
//		}
//
//		/**
//		* Utility method for converting a character sequence from bytes to Unicode.
//		*
//		* Primary usecase being converting $wgLegalTitleChars to a sequence usable in
//		* javascript, as PHP uses UTF-8 bytes where javascript uses Unicode code units.
//		*
//		* @param String $byteClass
//		* @return String
//		*/
//		public static function convertByteClassToUnicodeClass($byteClass) {
//			$length = strlen($byteClass);
//			// Input token queue
//			$x0 = $x1 = $x2 = '';
//			// Decoded queue
//			$d0 = $d1 = $d2 = '';
//			// Decoded integer codepoints
//			$ord0 = $ord1 = $ord2 = 0;
//			// Re-encoded queue
//			$r0 = $r1 = $r2 = '';
//			// Output
//			$out = '';
//			// Flags
//			$allowUnicode = false;
//			for ($pos = 0; $pos < $length; $pos++) {
//				// Shift the queues down
//				$x2 = $x1;
//				$x1 = $x0;
//				$d2 = $d1;
//				$d1 = $d0;
//				$ord2 = $ord1;
//				$ord1 = $ord0;
//				$r2 = $r1;
//				$r1 = $r0;
//				// Load the current input token and decoded values
//				$inChar = $byteClass[$pos];
//				if ($inChar == '\\') {
//					if (preg_match('/x([0-9a-fA-F]{2})/A', $byteClass, $m, 0, $pos + 1)) {
//						$x0 = $inChar . $m[0];
//						$d0 = chr(hexdec($m[1]));
//						$pos += strlen($m[0]);
//					} elseif (preg_match('/[0-7]{3}/A', $byteClass, $m, 0, $pos + 1)) {
//						$x0 = $inChar . $m[0];
//						$d0 = chr(octdec($m[0]));
//						$pos += strlen($m[0]);
//					} elseif ($pos + 1 >= $length) {
//						$x0 = $d0 = '\\';
//					} else {
//						$d0 = $byteClass[$pos + 1];
//						$x0 = $inChar . $d0;
//						$pos += 1;
//					}
//				} else {
//					$x0 = $d0 = $inChar;
//				}
//				$ord0 = ord($d0);
//				// Load the current re-encoded value
//				if ($ord0 < 32 || $ord0 == 0x7f) {
//					$r0 = sprintf('\x%02x', $ord0);
//				} elseif ($ord0 >= 0x80) {
//					// Allow unicode if a single high-bit character appears
//					$r0 = sprintf('\x%02x', $ord0);
//					$allowUnicode = true;
//				} elseif (strpos('-\\[]^', $d0) !== false) {
//					$r0 = '\\' . $d0;
//				} else {
//					$r0 = $d0;
//				}
//				// Do the output
//				if ($x0 !== '' && $x1 === '-' && $x2 !== '') {
//					// Range
//					if ($ord2 > $ord0) {
//						// Empty range
//					} elseif ($ord0 >= 0x80) {
//						// Unicode range
//						$allowUnicode = true;
//						if ($ord2 < 0x80) {
//							// Keep the non-unicode section of the range
//							$out .= "$r2-\\x7F";
//						}
//					} else {
//						// Normal range
//						$out .= "$r2-$r0";
//					}
//					// Reset state to the initial value
//					$x0 = $x1 = $d0 = $d1 = $r0 = $r1 = '';
//				} elseif ($ord2 < 0x80) {
//					// ASCII character
//					$out .= $r2;
//				}
//			}
//			if ($ord1 < 0x80) {
//				$out .= $r1;
//			}
//			if ($ord0 < 0x80) {
//				$out .= $r0;
//			}
//			if ($allowUnicode) {
//				$out .= '\u0080-\uFFFF';
//			}
//			return $out;
//		}
//
//		/**
//		* Make a prefixed DB key from a DB key and a namespace index
//		*
//		* @param int $ns Numerical representation of the namespace
//		* @param String $title The DB key form the title
//		* @param String $fragment The link fragment (after the "#")
//		* @param String $interwiki The interwiki prefix
//		* @param boolean $canonicalNamespace If true, use the canonical name for
//		*   $ns instead of the localized version.
//		* @return String The prefixed form of the title
//		*/
//		public static function makeName($ns, $title, $fragment = '', $interwiki = '',
//			$canonicalNamespace = false
//		) {
//			global $wgContLang;
//
//			if ($canonicalNamespace) {
//				$namespace = MWNamespace::getCanonicalName($ns);
//			} else {
//				$namespace = $wgContLang.getNsText($ns);
//			}
//			$name = $namespace == '' ? $title : "$namespace:$title";
//			if (strval($interwiki) != '') {
//				$name = "$interwiki:$name";
//			}
//			if (strval($fragment) != '') {
//				$name .= '#' . $fragment;
//			}
//			return $name;
//		}
//
//		/**
//		* Escape a text fragment, say from a link, for a URL
//		*
//		* @param String $fragment Containing a URL or link fragment (after the "#")
//		* @return String Escaped String
//		*/
//		static function escapeFragmentForURL($fragment) {
//			# Note that we don't urlencode the fragment.  urlencoded Unicode
//			# fragments appear not to work in IE (at least up to 7) or in at least
//			# one version of Opera 9.x.  The W3C validator, for one, doesn't seem
//			# to care if they aren't encoded.
//			return Sanitizer::escapeId($fragment, 'noninitial');
//		}
//
//		/**
//		* Callback for usort() to do title sorts by (namespace, title)
//		*
//		* @param LinkTarget $a
//		* @param LinkTarget $b
//		*
//		* @return int Result of String comparison, or namespace comparison
//		*/
//		public static function compare(LinkTarget $a, LinkTarget $b) {
//			if ($a.getNamespace() == $b.getNamespace()) {
//				return strcmp($a.getText(), $b.getText());
//			} else {
//				return $a.getNamespace() - $b.getNamespace();
//			}
//		}
//
//		/**
//		* Determine whether the Object refers to a page within
//		* this project (either this wiki or a wiki with a local
//		* interwiki, see https://www.mediawiki.org/wiki/Manual:Interwiki_table#iw_local)
//		*
//		* @return boolean True if this is an in-project interwiki link or a wikilink, false otherwise
//		*/
//		public function isLocal() {
//			if ($this.isExternal()) {
//				$iw = self::getInterwikiLookup().fetch($this.mInterwiki);
//				if ($iw) {
//					return $iw.isLocal();
//				}
//			}
//			return true;
//		}
//
//		/**
//		* Is this Title interwiki?
//		*
//		* @return boolean
//		*/
//		public function isExternal() {
//			return $this.mInterwiki !== '';
//		}
//
//		/**
//		* Get the interwiki prefix
//		*
//		* Use Title::isExternal to check if a interwiki is set
//		*
//		* @return String Interwiki prefix
//		*/
//		public function getInterwiki() {
//			return $this.mInterwiki;
//		}
//
//		/**
//		* Was this a local interwiki link?
//		*
//		* @return boolean
//		*/
//		public function wasLocalInterwiki() {
//			return $this.mLocalInterwiki;
//		}
//
//		/**
//		* Determine whether the Object refers to a page within
//		* this project and is transcludable.
//		*
//		* @return boolean True if this is transcludable
//		*/
//		public function isTrans() {
//			if (!$this.isExternal()) {
//				return false;
//			}
//
//			return self::getInterwikiLookup().fetch($this.mInterwiki).isTranscludable();
//		}
//
//		/**
//		* Returns the DB name of the distant wiki which owns the Object.
//		*
//		* @return String|false The DB name
//		*/
//		public function getTransWikiID() {
//			if (!$this.isExternal()) {
//				return false;
//			}
//
//			return self::getInterwikiLookup().fetch($this.mInterwiki).getWikiID();
//		}
//
//		/**
//		* Get a TitleValue Object representing this Title.
//		*
//		* @note Not all valid Titles have a corresponding valid TitleValue
//		* (e.g. TitleValues cannot represent page-local links that have a
//		* fragment but no title text).
//		*
//		* @return TitleValue|null
//		*/
//		public function getTitleValue() {
//			if ($this.mTitleValue === null) {
//				try {
//					$this.mTitleValue = new TitleValue(
//						$this.getNamespace(),
//						$this.getDBkey(),
//						$this.getFragment(),
//						$this.getInterwiki()
//					);
//				} catch (InvalidArgumentException $ex) {
//					wfDebug(__METHOD__ . ': Can\'t create a TitleValue for [[' .
//						$this.getPrefixedText() . ']]: ' . $ex.getMessage() . "\n");
//				}
//			}
//
//			return $this.mTitleValue;
//		}
//
//		/**
//		* Get the text form (spaces not underscores) of the main part
//		*
//		* @return String Main part of the title
//		*/
//		public function getText() {
//			return $this.mTextform;
//		}
//
//		/**
//		* Get the URL-encoded form of the main part
//		*
//		* @return String Main part of the title, URL-encoded
//		*/
//		public function getPartialURL() {
//			return $this.mUrlform;
//		}
//
//		/**
//		* Get the main part with underscores
//		*
//		* @return String Main part of the title, with underscores
//		*/
//		public function getDBkey() {
//			return $this.mDbkeyform;
//		}
//
//		/**
//		* Get the DB key with the initial letter case as specified by the user
//		*
//		* @return String DB key
//		*/
//		function getUserCaseDBKey() {
//			if (!is_null($this.mUserCaseDBKey)) {
//				return $this.mUserCaseDBKey;
//			} else {
//				// If created via makeTitle(), $this.mUserCaseDBKey is not set.
//				return $this.mDbkeyform;
//			}
//		}
//
//		/**
//		* Get the namespace index, i.e. one of the NS_xxxx constants.
//		*
//		* @return int Namespace index
//		*/
//		public function getNamespace() {
//			return $this.mNamespace;
//		}
//
//		/**
//		* Get the page's content model id, see the CONTENT_MODEL_XXX constants.
//		*
//		* @param int $flags A bit field; may be Title::GAID_FOR_UPDATE to select for update
//		* @return String Content model id
//		*/
//		public function getContentModel($flags = 0) {
//			if (!$this.mForcedContentModel
//				&& (!$this.mContentModel || $flags === Title::GAID_FOR_UPDATE)
//				&& $this.getArticleID($flags)
//			) {
//				$linkCache = LinkCache::singleton();
//				$linkCache.addLinkObj($this); # in case we already had an article ID
//				$this.mContentModel = $linkCache.getGoodLinkFieldObj($this, 'model');
//			}
//
//			if (!$this.mContentModel) {
//				$this.mContentModel = ContentHandler::getDefaultModelFor($this);
//			}
//
//			return $this.mContentModel;
//		}
//
//		/**
//		* Convenience method for checking a title's content model name
//		*
//		* @param String $id The content model ID (use the CONTENT_MODEL_XXX constants).
//		* @return boolean True if $this.getContentModel() == $id
//		*/
//		public function hasContentModel($id) {
//			return $this.getContentModel() == $id;
//		}
//
//		/**
//		* Set a proposed content model for the page for permissions
//		* checking. This does not actually change the content model
//		* of a title!
//		*
//		* Additionally, you should make sure you've checked
//		* ContentHandler::canBeUsedOn() first.
//		*
//		* @since 1.28
//		* @param String $model CONTENT_MODEL_XXX constant
//		*/
//		public function setContentModel($model) {
//			$this.mContentModel = $model;
//			$this.mForcedContentModel = true;
//		}
//
//		/**
//		* Get the namespace text
//		*
//		* @return String|false Namespace text
//		*/
//		public function getNsText() {
//			if ($this.isExternal()) {
//				// This probably shouldn't even happen,
//				// but for interwiki transclusion it sometimes does.
//				// Use the canonical namespaces if possible to try to
//				// resolve a foreign namespace.
//				if (MWNamespace::exists($this.mNamespace)) {
//					return MWNamespace::getCanonicalName($this.mNamespace);
//				}
//			}
//
//			try {
//				$formatter = self::getTitleFormatter();
//				return $formatter.getNamespaceName($this.mNamespace, $this.mDbkeyform);
//			} catch (InvalidArgumentException $ex) {
//				wfDebug(__METHOD__ . ': ' . $ex.getMessage() . "\n");
//				return false;
//			}
//		}
//
//		/**
//		* Get the namespace text of the subject (rather than talk) page
//		*
//		* @return String Namespace text
//		*/
//		public function getSubjectNsText() {
//			global $wgContLang;
//			return $wgContLang.getNsText(MWNamespace::getSubject($this.mNamespace));
//		}
//
//		/**
//		* Get the namespace text of the talk page
//		*
//		* @return String Namespace text
//		*/
//		public function getTalkNsText() {
//			global $wgContLang;
//			return $wgContLang.getNsText(MWNamespace::getTalk($this.mNamespace));
//		}
//
//		/**
//		* Could this title have a corresponding talk page?
//		*
//		* @return boolean
//		*/
//		public function canTalk() {
//			return MWNamespace::canTalk($this.mNamespace);
//		}
//
//		/**
//		* Is this in a namespace that allows actual pages?
//		*
//		* @return boolean
//		*/
//		public function canExist() {
//			return $this.mNamespace >= NS_MAIN;
//		}
//
//		/**
//		* Can this title be added to a user's watchlist?
//		*
//		* @return boolean
//		*/
//		public function isWatchable() {
//			return !$this.isExternal() && MWNamespace::isWatchable($this.getNamespace());
//		}
//
//		/**
//		* Returns true if this is a special page.
//		*
//		* @return boolean
//		*/
//		public function isSpecialPage() {
//			return $this.getNamespace() == NS_SPECIAL;
//		}
//
//		/**
//		* Returns true if this title resolves to the named special page
//		*
//		* @param String $name The special page name
//		* @return boolean
//		*/
//		public function isSpecial($name) {
//			if ($this.isSpecialPage()) {
//				list($thisName, /* $subpage */) = SpecialPageFactory::resolveAlias($this.getDBkey());
//				if ($name == $thisName) {
//					return true;
//				}
//			}
//			return false;
//		}
//
//		/**
//		* If the Title refers to a special page alias which is not the local default, resolve
//		* the alias, and localise the name as necessary.  Otherwise, return $this
//		*
//		* @return Title
//		*/
//		public function fixSpecialName() {
//			if ($this.isSpecialPage()) {
//				list($canonicalName, $par) = SpecialPageFactory::resolveAlias($this.mDbkeyform);
//				if ($canonicalName) {
//					$localName = SpecialPageFactory::getLocalNameFor($canonicalName, $par);
//					if ($localName != $this.mDbkeyform) {
//						return Title::makeTitle(NS_SPECIAL, $localName);
//					}
//				}
//			}
//			return $this;
//		}
//
//		/**
//		* Returns true if the title is inside the specified namespace.
//		*
//		* Please make use of this instead of comparing to getNamespace()
//		* This function is much more resistant to changes we may make
//		* to namespaces than code that makes direct comparisons.
//		* @param int $ns The namespace
//		* @return boolean
//		* @since 1.19
//		*/
//		public function inNamespace($ns) {
//			return MWNamespace::equals($this.getNamespace(), $ns);
//		}
//
//		/**
//		* Returns true if the title is inside one of the specified namespaces.
//		*
//		* @param int|int[] $namespaces,... The namespaces to check for
//		* @return boolean
//		* @since 1.19
//		*/
//		public function inNamespaces(/* ... */) {
//			$namespaces = func_get_args();
//			if (count($namespaces) > 0 && is_array($namespaces[0])) {
//				$namespaces = $namespaces[0];
//			}
//
//			foreach ($namespaces as $ns) {
//				if ($this.inNamespace($ns)) {
//					return true;
//				}
//			}
//
//			return false;
//		}
//
//		/**
//		* Returns true if the title has the same subject namespace as the
//		* namespace specified.
//		* For example this method will take NS_USER and return true if namespace
//		* is either NS_USER or NS_USER_TALK since both of them have NS_USER
//		* as their subject namespace.
//		*
//		* This is MUCH simpler than individually testing for equivalence
//		* against both NS_USER and NS_USER_TALK, and is also forward compatible.
//		* @since 1.19
//		* @param int $ns
//		* @return boolean
//		*/
//		public function hasSubjectNamespace($ns) {
//			return MWNamespace::subjectEquals($this.getNamespace(), $ns);
//		}
//
//		/**
//		* Is this Title in a namespace which contains content?
//		* In other words, is this a content page, for the purposes of calculating
//		* statistics, etc?
//		*
//		* @return boolean
//		*/
//		public function isContentPage() {
//			return MWNamespace::isContent($this.getNamespace());
//		}
//
//		/**
//		* Would anybody with sufficient privileges be able to move this page?
//		* Some pages just aren't movable.
//		*
//		* @return boolean
//		*/
//		public function isMovable() {
//			if (!MWNamespace::isMovable($this.getNamespace()) || $this.isExternal()) {
//				// Interwiki title or immovable namespace. Hooks don't get to override here
//				return false;
//			}
//
//			$result = true;
//			Hooks::run('TitleIsMovable', [ $this, &$result ]);
//			return $result;
//		}
//
//		/**
//		* Is this the mainpage?
//		* @note Title::newFromText seems to be sufficiently optimized by the title
//		* cache that we don't need to over-optimize by doing direct comparisons and
//		* accidentally creating new bugs where $title.equals(Title::newFromText())
//		* ends up reporting something differently than $title.isMainPage();
//		*
//		* @since 1.18
//		* @return boolean
//		*/
//		public function isMainPage() {
//			return $this.equals(Title::newMainPage());
//		}
//
//		/**
//		* Is this a subpage?
//		*
//		* @return boolean
//		*/
//		public function isSubpage() {
//			return MWNamespace::hasSubpages($this.mNamespace)
//				? strpos($this.getText(), '/') !== false
//				: false;
//		}
//
//		/**
//		* Is this a conversion table for the LanguageConverter?
//		*
//		* @return boolean
//		*/
//		public function isConversionTable() {
//			// @todo ConversionTable should become a separate content model.
//
//			return $this.getNamespace() == NS_MEDIAWIKI &&
//				strpos($this.getText(), 'Conversiontable/') === 0;
//		}
//
//		/**
//		* Does that page contain wikitext, or it is JS, CSS or whatever?
//		*
//		* @return boolean
//		*/
//		public function isWikitextPage() {
//			return $this.hasContentModel(CONTENT_MODEL_WIKITEXT);
//		}
//
//		/**
//		* Could this page contain custom CSS or JavaScript for the global UI.
//		* This is generally true for pages in the MediaWiki namespace having CONTENT_MODEL_CSS
//		* or CONTENT_MODEL_JAVASCRIPT.
//		*
//		* This method does *not* return true for per-user JS/CSS. Use isCssJsSubpage()
//		* for that!
//		*
//		* Note that this method should not return true for pages that contain and
//		* show "inactive" CSS or JS.
//		*
//		* @return boolean
//		* @todo FIXME: Rename to isSiteConfigPage() and remove deprecated hook
//		*/
//		public function isCssOrJsPage() {
//			$isCssOrJsPage = NS_MEDIAWIKI == $this.mNamespace
//				&& ($this.hasContentModel(CONTENT_MODEL_CSS)
//					|| $this.hasContentModel(CONTENT_MODEL_JAVASCRIPT));
//
//			return $isCssOrJsPage;
//		}
//
//		/**
//		* Is this a .css or .js subpage of a user page?
//		* @return boolean
//		* @todo FIXME: Rename to isUserConfigPage()
//		*/
//		public function isCssJsSubpage() {
//			return (NS_USER == $this.mNamespace && $this.isSubpage()
//					&& ($this.hasContentModel(CONTENT_MODEL_CSS)
//						|| $this.hasContentModel(CONTENT_MODEL_JAVASCRIPT)));
//		}
//
//		/**
//		* Trim down a .css or .js subpage title to get the corresponding skin name
//		*
//		* @return String Containing skin name from .css or .js subpage title
//		*/
//		public function getSkinFromCssJsSubpage() {
//			$subpage = explode('/', $this.mTextform);
//			$subpage = $subpage[count($subpage) - 1];
//			$lastdot = strrpos($subpage, '.');
//			if ($lastdot === false) {
//				return $subpage; # Never happens: only called for names ending in '.css' or '.js'
//			}
//			return substr($subpage, 0, $lastdot);
//		}
//
//		/**
//		* Is this a .css subpage of a user page?
//		*
//		* @return boolean
//		*/
//		public function isCssSubpage() {
//			return (NS_USER == $this.mNamespace && $this.isSubpage()
//				&& $this.hasContentModel(CONTENT_MODEL_CSS));
//		}
//
//		/**
//		* Is this a .js subpage of a user page?
//		*
//		* @return boolean
//		*/
//		public function isJsSubpage() {
//			return (NS_USER == $this.mNamespace && $this.isSubpage()
//				&& $this.hasContentModel(CONTENT_MODEL_JAVASCRIPT));
//		}
//
//		/**
//		* Is this a talk page of some sort?
//		*
//		* @return boolean
//		*/
//		public function isTalkPage() {
//			return MWNamespace::isTalk($this.getNamespace());
//		}
//
//		/**
//		* Get a Title Object associated with the talk page of this article
//		*
//		* @return Title The Object for the talk page
//		*/
//		public function getTalkPage() {
//			return Title::makeTitle(MWNamespace::getTalk($this.getNamespace()), $this.getDBkey());
//		}
//
//		/**
//		* Get a title Object associated with the subject page of this
//		* talk page
//		*
//		* @return Title The Object for the subject page
//		*/
//		public function getSubjectPage() {
//			// Is this the same title?
//			$subjectNS = MWNamespace::getSubject($this.getNamespace());
//			if ($this.getNamespace() == $subjectNS) {
//				return $this;
//			}
//			return Title::makeTitle($subjectNS, $this.getDBkey());
//		}
//
//		/**
//		* Get the other title for this page, if this is a subject page
//		* get the talk page, if it is a subject page get the talk page
//		*
//		* @since 1.25
//		* @throws MWException
//		* @return Title
//		*/
//		public function getOtherPage() {
//			if ($this.isSpecialPage()) {
//				throw new MWException('Special pages cannot have other pages');
//			}
//			if ($this.isTalkPage()) {
//				return $this.getSubjectPage();
//			} else {
//				return $this.getTalkPage();
//			}
//		}
//
//		/**
//		* Get the default namespace index, for when there is no namespace
//		*
//		* @return int Default namespace index
//		*/
//		public function getDefaultNamespace() {
//			return $this.mDefaultNamespace;
//		}
//
//		/**
//		* Get the Title fragment (i.e.\ the bit after the #) in text form
//		*
//		* Use Title::hasFragment to check for a fragment
//		*
//		* @return String Title fragment
//		*/
//		public function getFragment() {
//			return $this.mFragment;
//		}
//
//		/**
//		* Check if a Title fragment is set
//		*
//		* @return boolean
//		* @since 1.23
//		*/
//		public function hasFragment() {
//			return $this.mFragment !== '';
//		}
//
//		/**
//		* Get the fragment in URL form, including the "#" character if there is one
//		* @return String Fragment in URL form
//		*/
//		public function getFragmentForURL() {
//			if (!$this.hasFragment()) {
//				return '';
//			} else {
//				return '#' . Title::escapeFragmentForURL($this.getFragment());
//			}
//		}
//
//		/**
//		* Set the fragment for this title. Removes the first character from the
//		* specified fragment before setting, so it assumes you're passing it with
//		* an initial "#".
//		*
//		* Deprecated for public use, use Title::makeTitle() with fragment parameter,
//		* or Title::createFragmentTarget().
//		* Still in active use privately.
//		*
//		* @private
//		* @param String $fragment Text
//		*/
//		public function setFragment($fragment) {
//			$this.mFragment = strtr(substr($fragment, 1), '_', ' ');
//		}
//
//		/**
//		* Creates a new Title for a different fragment of the same page.
//		*
//		* @since 1.27
//		* @param String $fragment
//		* @return Title
//		*/
//		public function createFragmentTarget($fragment) {
//			return self::makeTitle(
//				$this.getNamespace(),
//				$this.getText(),
//				$fragment,
//				$this.getInterwiki()
//			);
//		}

	/**
	* Prefix some arbitrary text with the namespace or interwiki prefix
	* of this Object
	*
	* @param String $name The text
	* @return String The prefixed text
	*/
	private byte[] prefix(byte[] name) {
		byte[] p = Bry_.Empty;
//			if ($this.isExternal()) {
//				p = $this.mInterwiki . ':';
//			}

//			if (0 != $this.mNamespace) {
//				p .= $this.getNsText() . ':';
//			}
		return Bry_.Add(p, name);
	}

	/**
	* Get the prefixed database key form
	*
	* @return String The prefixed title, with underscores and
	*  any interwiki and namespace prefixes
	*/
	public byte[] getPrefixedDBkey() {
		byte[] s = this.prefix(this.mDbkeyform);
		s = Php_str_.strtr(s, Byte_ascii.Space, Byte_ascii.Underline);
		return s;
	}

//		/**
//		* Get the prefixed title with spaces.
//		* This is the form usually used for display
//		*
//		* @return String The prefixed title, with spaces
//		*/
//		public function getPrefixedText() {
//			if ($this.mPrefixedText === null) {
//				$s = $this.prefix($this.mTextform);
//				$s = strtr($s, '_', ' ');
//				$this.mPrefixedText = $s;
//			}
//			return $this.mPrefixedText;
//		}
//
//		/**
//		* Return a String representation of this title
//		*
//		* @return String Representation of this title
//		*/
//		public function __toString() {
//			return $this.getPrefixedText();
//		}
//
//		/**
//		* Get the prefixed title with spaces, plus any fragment
//		* (part beginning with '#')
//		*
//		* @return String The prefixed title, with spaces and the fragment, including '#'
//		*/
//		public function getFullText() {
//			$text = $this.getPrefixedText();
//			if ($this.hasFragment()) {
//				$text .= '#' . $this.getFragment();
//			}
//			return $text;
//		}
//
//		/**
//		* Get the root page name text without a namespace, i.e. the leftmost part before any slashes
//		*
//		* @par Example:
//		* @code
//		* Title::newFromText('User:Foo/Bar/Baz').getRootText();
//		* # returns: 'Foo'
//		* @endcode
//		*
//		* @return String Root name
//		* @since 1.20
//		*/
//		public function getRootText() {
//			if (!MWNamespace::hasSubpages($this.mNamespace)) {
//				return $this.getText();
//			}
//
//			return strtok($this.getText(), '/');
//		}
//
//		/**
//		* Get the root page name title, i.e. the leftmost part before any slashes
//		*
//		* @par Example:
//		* @code
//		* Title::newFromText('User:Foo/Bar/Baz').getRootTitle();
//		* # returns: Title{User:Foo}
//		* @endcode
//		*
//		* @return Title Root title
//		* @since 1.20
//		*/
//		public function getRootTitle() {
//			return Title::makeTitle($this.getNamespace(), $this.getRootText());
//		}
//
//		/**
//		* Get the super page name without a namespace, i.e. the part before the subpage name
//		*
//		* @par Example:
//		* @code
//		* Title::newFromText('User:Foo/Bar/Baz').getBaseText();
//		* # returns: 'Foo/Bar'
//		* @endcode
//		*
//		* @return String Base name
//		*/
//		public function getBaseText() {
//			if (!MWNamespace::hasSubpages($this.mNamespace)) {
//				return $this.getText();
//			}
//
//			$parts = explode('/', $this.getText());
//			# Don't discard the real title if there's no subpage involved
//			if (count($parts) > 1) {
//				unset($parts[count($parts) - 1]);
//			}
//			return implode('/', $parts);
//		}
//
//		/**
//		* Get the super page name title, i.e. the part before the subpage name
//		*
//		* @par Example:
//		* @code
//		* Title::newFromText('User:Foo/Bar/Baz').getBaseTitle();
//		* # returns: Title{User:Foo/Bar}
//		* @endcode
//		*
//		* @return Title Base title
//		* @since 1.20
//		*/
//		public function getBaseTitle() {
//			return Title::makeTitle($this.getNamespace(), $this.getBaseText());
//		}
//
//		/**
//		* Get the lowest-level subpage name, i.e. the rightmost part after any slashes
//		*
//		* @par Example:
//		* @code
//		* Title::newFromText('User:Foo/Bar/Baz').getSubpageText();
//		* # returns: "Baz"
//		* @endcode
//		*
//		* @return String Subpage name
//		*/
//		public function getSubpageText() {
//			if (!MWNamespace::hasSubpages($this.mNamespace)) {
//				return $this.mTextform;
//			}
//			$parts = explode('/', $this.mTextform);
//			return $parts[count($parts) - 1];
//		}
//
//		/**
//		* Get the title for a subpage of the current page
//		*
//		* @par Example:
//		* @code
//		* Title::newFromText('User:Foo/Bar/Baz').getSubpage("Asdf");
//		* # returns: Title{User:Foo/Bar/Baz/Asdf}
//		* @endcode
//		*
//		* @param String $text The subpage name to add to the title
//		* @return Title Subpage title
//		* @since 1.20
//		*/
//		public function getSubpage($text) {
//			return Title::makeTitleSafe($this.getNamespace(), $this.getText() . '/' . $text);
//		}
//
//		/**
//		* Get a URL-encoded form of the subpage text
//		*
//		* @return String URL-encoded subpage name
//		*/
//		public function getSubpageUrlForm() {
//			$text = $this.getSubpageText();
//			$text = wfUrlencode(strtr($text, ' ', '_'));
//			return $text;
//		}
//
//		/**
//		* Get a URL-encoded title (not an actual URL) including interwiki
//		*
//		* @return String The URL-encoded form
//		*/
//		public function getPrefixedURL() {
//			$s = $this.prefix($this.mDbkeyform);
//			$s = wfUrlencode(strtr($s, ' ', '_'));
//			return $s;
//		}
//
//		/**
//		* Helper to fix up the get{Canonical,Full,Link,Local,Internal}URL args
//		* get{Canonical,Full,Link,Local,Internal}URL methods accepted an optional
//		* second argument named variant. This was deprecated in favor
//		* of passing an array of option with a "variant" key
//		* Once $query2 is removed for good, this helper can be dropped
//		* and the wfArrayToCgi moved to getLocalURL();
//		*
//		* @since 1.19 (r105919)
//		* @param array|String $query
//		* @param String|String[]|boolean $query2
//		* @return String
//		*/
//		private static function fixUrlQueryArgs($query, $query2 = false) {
//			if ($query2 !== false) {
//				wfDeprecated("Title::get{Canonical,Full,Link,Local,Internal}URL " .
//					"method called with a second parameter is deprecated. Add your " .
//					"parameter to an array passed as the first parameter.", "1.19");
//			}
//			if (is_array($query)) {
//				$query = wfArrayToCgi($query);
//			}
//			if ($query2) {
//				if (is_string($query2)) {
//					// $query2 is a String, we will consider this to be
//					// a deprecated $variant argument and add it to the query
//					$query2 = wfArrayToCgi([ 'variant' => $query2 ]);
//				} else {
//					$query2 = wfArrayToCgi($query2);
//				}
//				// If we have $query content add a & to it first
//				if ($query) {
//					$query .= '&';
//				}
//				// Now append the queries together
//				$query .= $query2;
//			}
//			return $query;
//		}
//
//		/**
//		* Get a real URL referring to this title, with interwiki link and
//		* fragment
//		*
//		* @see self::getLocalURL for the arguments.
//		* @see wfExpandUrl
//		* @param String|String[] $query
//		* @param String|String[]|boolean $query2
//		* @param String $proto Protocol type to use in URL
//		* @return String The URL
//		*/
//		public function getFullURL($query = '', $query2 = false, $proto = PROTO_RELATIVE) {
//			$query = self::fixUrlQueryArgs($query, $query2);
//
//			# Hand off all the decisions on urls to getLocalURL
//			$url = $this.getLocalURL($query);
//
//			# Expand the url to make it a full url. Note that getLocalURL has the
//			# potential to output full urls for a variety of reasons, so we use
//			# wfExpandUrl instead of simply prepending $wgServer
//			$url = wfExpandUrl($url, $proto);
//
//			# Finally, add the fragment.
//			$url .= $this.getFragmentForURL();
//			// Avoid PHP 7.1 warning from passing $this by reference
//			$titleRef = $this;
//			Hooks::run('GetFullURL', [ &$titleRef, &$url, $query ]);
//			return $url;
//		}

	/**
	* Get a URL with no fragment or server name (relative URL) from a Title Object.
	* If this page is generated with action=render, however,
	* $wgServer is prepended to make an absolute URL.
	*
	* @see self::getFullURL to always get an absolute URL.
	* @see self::getLinkURL to always get a URL that's the simplest URL that will be
	*  valid to link, locally, to the current Title.
	* @see self::newFromText to produce a Title Object.
	*
	* @param String|String[] $query An optional query String,
	*   not used for interwiki links. Can be specified as an associative array as well,
	*   e.g., array('action' => 'edit') (keys and values will be URL-escaped).
	*   Some query patterns will trigger various shorturl path replacements.
	* @param String|String[]|boolean $query2 An optional secondary query array. This one MUST
	*   be an array. If a String is passed it will be interpreted as a deprecated
	*   variant argument and urlencoded into a variant= argument.
	*   This second query argument will be added to the $query
	*   The second parameter is deprecated since 1.19. Pass it as a key,value
	*   pair in the first parameter array instead.
	*
	* @return String String of the URL.
	*/
	public byte[] getLocalURL(byte[] query, byte[] query2) {
		byte[] url = null;
//			global wgArticlePath, wgScript, wgServer, wgRequest;
//
//			query = self::fixUrlQueryArgs(query, query2);
//
//			interwiki = self::getInterwikiLookup().fetch(this.mInterwiki);
//			if (interwiki) {
//				namespace = this.getNsText();
//				if (namespace != '') {
//					# Can this actually happen? Interwikis shouldn't be parsed.
//					# Yes! It can in interwiki transclusion. But... it probably shouldn't.
//					namespace .= ':';
//				}
//				url = interwiki.getURL(namespace . this.getDBkey());
//				url = wfAppendQuery(url, query);
//			} else {
//				byte[] dbkey = wfUrlencode(this.getPrefixedDBkey());
			byte[] dbkey = this.getPrefixedDBkey();
//				if (query == '') {
//					url = str_replace('$1', dbkey, wgArticlePath);
				url = Bry_.Add(Bry__wgArticlePath__wiki,  dbkey);
				// XO.MW.HOOK:GetLocalURL::Article
//				} else {
//					global wgVariantArticlePath, wgActionPaths, wgContLang;
//					url = false;
//					matches = [];
//
//					if (!empty(wgActionPaths)
//						&& preg_match('/^(.*&|)action=([^&]*)(&(.*)|)/', query, matches)
//					) {
//						action = urldecode(matches[2]);
//						if (isset(wgActionPaths[action])) {
//							query = matches[1];
//							if (isset(matches[4])) {
//								query .= matches[4];
//							}
//							url = str_replace('1', dbkey, wgActionPaths[action]);
//							if (query != '') {
//								url = wfAppendQuery(url, query);
//							}
//						}
//					}
//
//					if (url === false
//						&& wgVariantArticlePath
//						&& preg_match('/^variant=([^&]*)/', query, matches)
//						&& this.getPageLanguage().equals(wgContLang)
//						&& this.getPageLanguage().hasVariants()
//					) {
//						variant = urldecode(matches[1]);
//						if (this.getPageLanguage().hasVariant(variant)) {
//							// Only do the variant replacement if the given variant is a valid
//							// variant for the page's language.
//							url = str_replace('2', urlencode(variant), wgVariantArticlePath);
//							url = str_replace('1', dbkey, url);
//						}
//					}
//
//					if (url === false) {
//						if (query == '-') {
//							query = '';
//						}
//						url = "{wgScript}?title={dbkey}&{query}";
//					}
//				}
			// XO.MW.HOOK:GetLocalURL::Internal
//
//				// @todo FIXME: This causes breakage in various places when we
//				// actually expected a local URL and end up with dupe prefixes.
//				if (wgRequest.getVal('action') == 'render') {
//					url = wgServer . url;
//				}
//			}
		// XO.MW.HOOK:GetLocalURL
		return url;
	}

//		/**
//		* Get a URL that's the simplest URL that will be valid to link, locally,
//		* to the current Title.  It includes the fragment, but does not include
//		* the server unless action=render is used (or the link is external).  If
//		* there's a fragment but the prefixed text is empty, we just return a link
//		* to the fragment.
//		*
//		* The result obviously should not be URL-escaped, but does need to be
//		* HTML-escaped if it's being output in HTML.
//		*
//		* @param String|String[] $query
//		* @param boolean $query2
//		* @param String|int|boolean $proto A PROTO_* constant on how the URL should be expanded,
//		*                               or false (default) for no expansion
//		* @see self::getLocalURL for the arguments.
//		* @return String The URL
//		*/
//		public function getLinkURL($query = '', $query2 = false, $proto = false) {
//			if ($this.isExternal() || $proto !== false) {
//				$ret = $this.getFullURL($query, $query2, $proto);
//			} elseif ($this.getPrefixedText() === '' && $this.hasFragment()) {
//				$ret = $this.getFragmentForURL();
//			} else {
//				$ret = $this.getLocalURL($query, $query2) . $this.getFragmentForURL();
//			}
//			return $ret;
//		}
//
//		/**
//		* Get the URL form for an @gplx.Internal protected link.
//		* - Used in various CDN-related code, in case we have a different
//		* @gplx.Internal protected hostname for the server from the exposed one.
//		*
//		* This uses $wgInternalServer to qualify the path, or $wgServer
//		* if $wgInternalServer is not set. If the server variable used is
//		* protocol-relative, the URL will be expanded to http://
//		*
//		* @see self::getLocalURL for the arguments.
//		* @return String The URL
//		*/
//		public function getInternalURL($query = '', $query2 = false) {
//			global $wgInternalServer, $wgServer;
//			$query = self::fixUrlQueryArgs($query, $query2);
//			$server = $wgInternalServer !== false ? $wgInternalServer : $wgServer;
//			$url = wfExpandUrl($server . $this.getLocalURL($query), PROTO_HTTP);
//			// Avoid PHP 7.1 warning from passing $this by reference
//			$titleRef = $this;
//			Hooks::run('GetInternalURL', [ &$titleRef, &$url, $query ]);
//			return $url;
//		}
//
//		/**
//		* Get the URL for a canonical link, for use in things like IRC and
//		* e-mail notifications. Uses $wgCanonicalServer and the
//		* GetCanonicalURL hook.
//		*
//		* NOTE: Unlike getInternalURL(), the canonical URL includes the fragment
//		*
//		* @see self::getLocalURL for the arguments.
//		* @return String The URL
//		* @since 1.18
//		*/
//		public function getCanonicalURL($query = '', $query2 = false) {
//			$query = self::fixUrlQueryArgs($query, $query2);
//			$url = wfExpandUrl($this.getLocalURL($query) . $this.getFragmentForURL(), PROTO_CANONICAL);
//			// Avoid PHP 7.1 warning from passing $this by reference
//			$titleRef = $this;
//			Hooks::run('GetCanonicalURL', [ &$titleRef, &$url, $query ]);
//			return $url;
//		}
//
//		/**
//		* Get the edit URL for this Title
//		*
//		* @return String The URL, or a null String if this is an interwiki link
//		*/
//		public function getEditURL() {
//			if ($this.isExternal()) {
//				return '';
//			}
//			$s = $this.getLocalURL('action=edit');
//
//			return $s;
//		}
//
//		/**
//		* Can $user perform $action on this page?
//		* This skips potentially expensive cascading permission checks
//		* as well as avoids expensive error formatting
//		*
//		* Suitable for use for nonessential UI controls in common cases, but
//		* _not_ for functional access control.
//		*
//		* May provide false positives, but should never provide a false negative.
//		*
//		* @param String $action Action that permission needs to be checked for
//		* @param User $user User to check (since 1.19); $wgUser will be used if not provided.
//		* @return boolean
//		*/
//		public function quickUserCan($action, $user = null) {
//			return $this.userCan($action, $user, false);
//		}
//
//		/**
//		* Can $user perform $action on this page?
//		*
//		* @param String $action Action that permission needs to be checked for
//		* @param User $user User to check (since 1.19); $wgUser will be used if not
//		*   provided.
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @return boolean
//		*/
//		public function userCan($action, $user = null, $rigor = 'secure') {
//			if (!$user instanceof User) {
//				global $wgUser;
//				$user = $wgUser;
//			}
//
//			return !count($this.getUserPermissionsErrorsInternal($action, $user, $rigor, true));
//		}
//
//		/**
//		* Can $user perform $action on this page?
//		*
//		* @todo FIXME: This *does not* check throttles (User::pingLimiter()).
//		*
//		* @param String $action Action that permission needs to be checked for
//		* @param User $user User to check
//		* @param String $rigor One of (quick,full,secure)
//		*   - quick  : does cheap permission checks from replica DBs (usable for GUI creation)
//		*   - full   : does cheap and expensive checks possibly from a replica DB
//		*   - secure : does cheap and expensive checks, using the master as needed
//		* @param array $ignoreErrors Array of Strings Set this to a list of message keys
//		*   whose corresponding errors may be ignored.
//		* @return array Array of arrays of the arguments to wfMessage to explain permissions problems.
//		*/
//		public function getUserPermissionsErrors(
//			$action, $user, $rigor = 'secure', $ignoreErrors = []
//		) {
//			$errors = $this.getUserPermissionsErrorsInternal($action, $user, $rigor);
//
//			// Remove the errors being ignored.
//			foreach ($errors as $index => $error) {
//				$errKey = is_array($error) ? $error[0] : $error;
//
//				if (in_array($errKey, $ignoreErrors)) {
//					unset($errors[$index]);
//				}
//				if ($errKey instanceof MessageSpecifier && in_array($errKey.getKey(), $ignoreErrors)) {
//					unset($errors[$index]);
//				}
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Permissions checks that fail most often, and which are easiest to test.
//		*
//		* @param String $action The action to check
//		* @param User $user User to check
//		* @param array $errors List of current errors
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @param boolean $short Short circuit on first error
//		*
//		* @return array List of errors
//		*/
//		private function checkQuickPermissions($action, $user, $errors, $rigor, $short) {
//			if (!Hooks::run('TitleQuickPermissions',
//				[ $this, $user, $action, &$errors, ($rigor !== 'quick'), $short ])
//			) {
//				return $errors;
//			}
//
//			if ($action == 'create') {
//				if (
//					($this.isTalkPage() && !$user.isAllowed('createtalk')) ||
//					(!$this.isTalkPage() && !$user.isAllowed('createpage'))
//				) {
//					$errors[] = $user.isAnon() ? [ 'nocreatetext' ] : [ 'nocreate-loggedin' ];
//				}
//			} elseif ($action == 'move') {
//				if (!$user.isAllowed('move-rootuserpages')
//						&& $this.mNamespace == NS_USER && !$this.isSubpage()) {
//					// Show user page-specific message only if the user can move other pages
//					$errors[] = [ 'cant-move-user-page' ];
//				}
//
//				// Check if user is allowed to move files if it's a file
//				if ($this.mNamespace == NS_FILE && !$user.isAllowed('movefile')) {
//					$errors[] = [ 'movenotallowedfile' ];
//				}
//
//				// Check if user is allowed to move category pages if it's a category page
//				if ($this.mNamespace == NS_CATEGORY && !$user.isAllowed('move-categorypages')) {
//					$errors[] = [ 'cant-move-category-page' ];
//				}
//
//				if (!$user.isAllowed('move')) {
//					// User can't move anything
//					$userCanMove = User::groupHasPermission('user', 'move');
//					$autoconfirmedCanMove = User::groupHasPermission('autoconfirmed', 'move');
//					if ($user.isAnon() && ($userCanMove || $autoconfirmedCanMove)) {
//						// custom message if logged-in users without any special rights can move
//						$errors[] = [ 'movenologintext' ];
//					} else {
//						$errors[] = [ 'movenotallowed' ];
//					}
//				}
//			} elseif ($action == 'move-target') {
//				if (!$user.isAllowed('move')) {
//					// User can't move anything
//					$errors[] = [ 'movenotallowed' ];
//				} elseif (!$user.isAllowed('move-rootuserpages')
//						&& $this.mNamespace == NS_USER && !$this.isSubpage()) {
//					// Show user page-specific message only if the user can move other pages
//					$errors[] = [ 'cant-move-to-user-page' ];
//				} elseif (!$user.isAllowed('move-categorypages')
//						&& $this.mNamespace == NS_CATEGORY) {
//					// Show category page-specific message only if the user can move other pages
//					$errors[] = [ 'cant-move-to-category-page' ];
//				}
//			} elseif (!$user.isAllowed($action)) {
//				$errors[] = $this.missingPermissionError($action, $short);
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Add the resulting error code to the errors array
//		*
//		* @param array $errors List of current errors
//		* @param array $result Result of errors
//		*
//		* @return array List of errors
//		*/
//		private function resultToError($errors, $result) {
//			if (is_array($result) && count($result) && !is_array($result[0])) {
//				// A single array representing an error
//				$errors[] = $result;
//			} elseif (is_array($result) && is_array($result[0])) {
//				// A nested array representing multiple errors
//				$errors = array_merge($errors, $result);
//			} elseif ($result !== '' && is_string($result)) {
//				// A String representing a message-id
//				$errors[] = [ $result ];
//			} elseif ($result instanceof MessageSpecifier) {
//				// A message specifier representing an error
//				$errors[] = [ $result ];
//			} elseif ($result === false) {
//				// a generic "We don't want them to do that"
//				$errors[] = [ 'badaccess-group0' ];
//			}
//			return $errors;
//		}
//
//		/**
//		* Check various permission hooks
//		*
//		* @param String $action The action to check
//		* @param User $user User to check
//		* @param array $errors List of current errors
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @param boolean $short Short circuit on first error
//		*
//		* @return array List of errors
//		*/
//		private function checkPermissionHooks($action, $user, $errors, $rigor, $short) {
//			// Use getUserPermissionsErrors instead
//			$result = '';
//			// Avoid PHP 7.1 warning from passing $this by reference
//			$titleRef = $this;
//			if (!Hooks::run('userCan', [ &$titleRef, &$user, $action, &$result ])) {
//				return $result ? [] : [ [ 'badaccess-group0' ] ];
//			}
//			// Check getUserPermissionsErrors hook
//			// Avoid PHP 7.1 warning from passing $this by reference
//			$titleRef = $this;
//			if (!Hooks::run('getUserPermissionsErrors', [ &$titleRef, &$user, $action, &$result ])) {
//				$errors = $this.resultToError($errors, $result);
//			}
//			// Check getUserPermissionsErrorsExpensive hook
//			if (
//				$rigor !== 'quick'
//				&& !($short && count($errors) > 0)
//				&& !Hooks::run('getUserPermissionsErrorsExpensive', [ &$titleRef, &$user, $action, &$result ])
//			) {
//				$errors = $this.resultToError($errors, $result);
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Check permissions on special pages & namespaces
//		*
//		* @param String $action The action to check
//		* @param User $user User to check
//		* @param array $errors List of current errors
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @param boolean $short Short circuit on first error
//		*
//		* @return array List of errors
//		*/
//		private function checkSpecialsAndNSPermissions($action, $user, $errors, $rigor, $short) {
//			# Only 'createaccount' can be performed on special pages,
//			# which don't actually exist in the DB.
//			if (NS_SPECIAL == $this.mNamespace && $action !== 'createaccount') {
//				$errors[] = [ 'ns-specialprotected' ];
//			}
//
//			# Check $wgNamespaceProtection for restricted namespaces
//			if ($this.isNamespaceProtected($user)) {
//				$ns = $this.mNamespace == NS_MAIN ?
//					wfMessage('nstab-main').text() : $this.getNsText();
//				$errors[] = $this.mNamespace == NS_MEDIAWIKI ?
//					[ 'protectedinterface', $action ] : [ 'namespaceprotected', $ns, $action ];
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Check CSS/JS sub-page permissions
//		*
//		* @param String $action The action to check
//		* @param User $user User to check
//		* @param array $errors List of current errors
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @param boolean $short Short circuit on first error
//		*
//		* @return array List of errors
//		*/
//		private function checkCSSandJSPermissions($action, $user, $errors, $rigor, $short) {
//			# Protect css/js subpages of user pages
//			# XXX: this might be better using restrictions
//			# XXX: right 'editusercssjs' is deprecated, for backward compatibility only
//			if ($action != 'patrol' && !$user.isAllowed('editusercssjs')) {
//				if (preg_match('/^' . preg_quote($user.getName(), '/') . '\//', $this.mTextform)) {
//					if ($this.isCssSubpage() && !$user.isAllowedAny('editmyusercss', 'editusercss')) {
//						$errors[] = [ 'mycustomcssprotected', $action ];
//					} elseif ($this.isJsSubpage() && !$user.isAllowedAny('editmyuserjs', 'edituserjs')) {
//						$errors[] = [ 'mycustomjsprotected', $action ];
//					}
//				} else {
//					if ($this.isCssSubpage() && !$user.isAllowed('editusercss')) {
//						$errors[] = [ 'customcssprotected', $action ];
//					} elseif ($this.isJsSubpage() && !$user.isAllowed('edituserjs')) {
//						$errors[] = [ 'customjsprotected', $action ];
//					}
//				}
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Check against page_restrictions table requirements on this
//		* page. The user must possess all required rights for this
//		* action.
//		*
//		* @param String $action The action to check
//		* @param User $user User to check
//		* @param array $errors List of current errors
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @param boolean $short Short circuit on first error
//		*
//		* @return array List of errors
//		*/
//		private function checkPageRestrictions($action, $user, $errors, $rigor, $short) {
//			foreach ($this.getRestrictions($action) as $right) {
//				// Backwards compatibility, rewrite sysop . editprotected
//				if ($right == 'sysop') {
//					$right = 'editprotected';
//				}
//				// Backwards compatibility, rewrite autoconfirmed . editsemiprotected
//				if ($right == 'autoconfirmed') {
//					$right = 'editsemiprotected';
//				}
//				if ($right == '') {
//					continue;
//				}
//				if (!$user.isAllowed($right)) {
//					$errors[] = [ 'protectedpagetext', $right, $action ];
//				} elseif ($this.mCascadeRestriction && !$user.isAllowed('protect')) {
//					$errors[] = [ 'protectedpagetext', 'protect', $action ];
//				}
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Check restrictions on cascading pages.
//		*
//		* @param String $action The action to check
//		* @param User $user User to check
//		* @param array $errors List of current errors
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @param boolean $short Short circuit on first error
//		*
//		* @return array List of errors
//		*/
//		private function checkCascadingSourcesRestrictions($action, $user, $errors, $rigor, $short) {
//			if ($rigor !== 'quick' && !$this.isCssJsSubpage()) {
//				# We /could/ use the protection level on the source page, but it's
//				# fairly ugly as we have to establish a precedence hierarchy for pages
//				# included by multiple cascade-protected pages. So just restrict
//				# it to people with 'protect' permission, as they could remove the
//				# protection anyway.
//				list($cascadingSources, $restrictions) = $this.getCascadeProtectionSources();
//				# Cascading protection depends on more than this page...
//				# Several cascading protected pages may include this page...
//				# Check each cascading level
//				# This is only for protection restrictions, not for all actions
//				if (isset($restrictions[$action])) {
//					foreach ($restrictions[$action] as $right) {
//						// Backwards compatibility, rewrite sysop . editprotected
//						if ($right == 'sysop') {
//							$right = 'editprotected';
//						}
//						// Backwards compatibility, rewrite autoconfirmed . editsemiprotected
//						if ($right == 'autoconfirmed') {
//							$right = 'editsemiprotected';
//						}
//						if ($right != '' && !$user.isAllowedAll('protect', $right)) {
//							$pages = '';
//							foreach ($cascadingSources as $page) {
//								$pages .= '* [[:' . $page.getPrefixedText() . "]]\n";
//							}
//							$errors[] = [ 'cascadeprotected', count($cascadingSources), $pages, $action ];
//						}
//					}
//				}
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Check action permissions not already checked in checkQuickPermissions
//		*
//		* @param String $action The action to check
//		* @param User $user User to check
//		* @param array $errors List of current errors
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @param boolean $short Short circuit on first error
//		*
//		* @return array List of errors
//		*/
//		private function checkActionPermissions($action, $user, $errors, $rigor, $short) {
//			global $wgDeleteRevisionsLimit, $wgLang;
//
//			if ($action == 'protect') {
//				if (count($this.getUserPermissionsErrorsInternal('edit', $user, $rigor, true))) {
//					// If they can't edit, they shouldn't protect.
//					$errors[] = [ 'protect-cantedit' ];
//				}
//			} elseif ($action == 'create') {
//				$title_protection = $this.getTitleProtection();
//				if ($title_protection) {
//					if ($title_protection['permission'] == ''
//						|| !$user.isAllowed($title_protection['permission'])
//					) {
//						$errors[] = [
//							'titleprotected',
//							User::whoIs($title_protection['user']),
//							$title_protection['reason']
//						];
//					}
//				}
//			} elseif ($action == 'move') {
//				// Check for immobile pages
//				if (!MWNamespace::isMovable($this.mNamespace)) {
//					// Specific message for this case
//					$errors[] = [ 'immobile-source-namespace', $this.getNsText() ];
//				} elseif (!$this.isMovable()) {
//					// Less specific message for rarer cases
//					$errors[] = [ 'immobile-source-page' ];
//				}
//			} elseif ($action == 'move-target') {
//				if (!MWNamespace::isMovable($this.mNamespace)) {
//					$errors[] = [ 'immobile-target-namespace', $this.getNsText() ];
//				} elseif (!$this.isMovable()) {
//					$errors[] = [ 'immobile-target-page' ];
//				}
//			} elseif ($action == 'delete') {
//				$tempErrors = $this.checkPageRestrictions('edit', $user, [], $rigor, true);
//				if (!$tempErrors) {
//					$tempErrors = $this.checkCascadingSourcesRestrictions('edit',
//						$user, $tempErrors, $rigor, true);
//				}
//				if ($tempErrors) {
//					// If protection keeps them from editing, they shouldn't be able to delete.
//					$errors[] = [ 'deleteprotected' ];
//				}
//				if ($rigor !== 'quick' && $wgDeleteRevisionsLimit
//					&& !$this.userCan('bigdelete', $user) && $this.isBigDeletion()
//				) {
//					$errors[] = [ 'delete-toobig', $wgLang.formatNum($wgDeleteRevisionsLimit) ];
//				}
//			}
//			return $errors;
//		}
//
//		/**
//		* Check that the user isn't blocked from editing.
//		*
//		* @param String $action The action to check
//		* @param User $user User to check
//		* @param array $errors List of current errors
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @param boolean $short Short circuit on first error
//		*
//		* @return array List of errors
//		*/
//		private function checkUserBlock($action, $user, $errors, $rigor, $short) {
//			global $wgEmailConfirmToEdit, $wgBlockDisablesLogin;
//			// Account creation blocks handled at userlogin.
//			// Unblocking handled in SpecialUnblock
//			if ($rigor === 'quick' || in_array($action, [ 'createaccount', 'unblock' ])) {
//				return $errors;
//			}
//
//			// Optimize for a very common case
//			if ($action === 'read' && !$wgBlockDisablesLogin) {
//				return $errors;
//			}
//
//			if ($wgEmailConfirmToEdit && !$user.isEmailConfirmed()) {
//				$errors[] = [ 'confirmedittext' ];
//			}
//
//			$useSlave = ($rigor !== 'secure');
//			if (($action == 'edit' || $action == 'create')
//				&& !$user.isBlockedFrom($this, $useSlave)
//			) {
//				// Don't block the user from editing their own talk page unless they've been
//				// explicitly blocked from that too.
//			} elseif ($user.isBlocked() && $user.getBlock().prevents($action) !== false) {
//				// @todo FIXME: Pass the relevant context into this function.
//				$errors[] = $user.getBlock().getPermissionsError(RequestContext::getMain());
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Check that the user is allowed to read this page.
//		*
//		* @param String $action The action to check
//		* @param User $user User to check
//		* @param array $errors List of current errors
//		* @param String $rigor Same format as Title::getUserPermissionsErrors()
//		* @param boolean $short Short circuit on first error
//		*
//		* @return array List of errors
//		*/
//		private function checkReadPermissions($action, $user, $errors, $rigor, $short) {
//			global $wgWhitelistRead, $wgWhitelistReadRegexp;
//
//			$whitelisted = false;
//			if (User::isEveryoneAllowed('read')) {
//				# Shortcut for public wikis, allows skipping quite a bit of code
//				$whitelisted = true;
//			} elseif ($user.isAllowed('read')) {
//				# If the user is allowed to read pages, he is allowed to read all pages
//				$whitelisted = true;
//			} elseif ($this.isSpecial('Userlogin')
//				|| $this.isSpecial('PasswordReset')
//				|| $this.isSpecial('Userlogout')
//			) {
//				# Always grant access to the login page.
//				# Even anons need to be able to log in.
//				$whitelisted = true;
//			} elseif (is_array($wgWhitelistRead) && count($wgWhitelistRead)) {
//				# Time to check the whitelist
//				# Only do these checks is there's something to check against
//				$name = $this.getPrefixedText();
//				$dbName = $this.getPrefixedDBkey();
//
//				// Check for explicit whitelisting with and without underscores
//				if (in_array($name, $wgWhitelistRead, true) || in_array($dbName, $wgWhitelistRead, true)) {
//					$whitelisted = true;
//				} elseif ($this.getNamespace() == NS_MAIN) {
//					# Old settings might have the title prefixed with
//					# a colon for main-namespace pages
//					if (in_array(':' . $name, $wgWhitelistRead)) {
//						$whitelisted = true;
//					}
//				} elseif ($this.isSpecialPage()) {
//					# If it's a special page, ditch the subpage bit and check again
//					$name = $this.getDBkey();
//					list($name, /* $subpage */) = SpecialPageFactory::resolveAlias($name);
//					if ($name) {
//						$pure = SpecialPage::getTitleFor($name).getPrefixedText();
//						if (in_array($pure, $wgWhitelistRead, true)) {
//							$whitelisted = true;
//						}
//					}
//				}
//			}
//
//			if (!$whitelisted && is_array($wgWhitelistReadRegexp) && !empty($wgWhitelistReadRegexp)) {
//				$name = $this.getPrefixedText();
//				// Check for regex whitelisting
//				foreach ($wgWhitelistReadRegexp as $listItem) {
//					if (preg_match($listItem, $name)) {
//						$whitelisted = true;
//						break;
//					}
//				}
//			}
//
//			if (!$whitelisted) {
//				# If the title is not whitelisted, give extensions a chance to do so...
//				Hooks::run('TitleReadWhitelist', [ $this, $user, &$whitelisted ]);
//				if (!$whitelisted) {
//					$errors[] = $this.missingPermissionError($action, $short);
//				}
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Get a description array when the user doesn't have the right to perform
//		* $action (i.e. when User::isAllowed() returns false)
//		*
//		* @param String $action The action to check
//		* @param boolean $short Short circuit on first error
//		* @return array List of errors
//		*/
//		private function missingPermissionError($action, $short) {
//			// We avoid expensive display logic for quickUserCan's and such
//			if ($short) {
//				return [ 'badaccess-group0' ];
//			}
//
//			$groups = array_map([ 'User', 'makeGroupLinkWiki' ],
//				User::getGroupsWithPermission($action));
//
//			if (count($groups)) {
//				global $wgLang;
//				return [
//					'badaccess-groups',
//					$wgLang.commaList($groups),
//					count($groups)
//				];
//			} else {
//				return [ 'badaccess-group0' ];
//			}
//		}
//
//		/**
//		* Can $user perform $action on this page? This is an @gplx.Internal protected function,
//		* with multiple levels of checks depending on performance needs; see $rigor below.
//		* It does not check wfReadOnly().
//		*
//		* @param String $action Action that permission needs to be checked for
//		* @param User $user User to check
//		* @param String $rigor One of (quick,full,secure)
//		*   - quick  : does cheap permission checks from replica DBs (usable for GUI creation)
//		*   - full   : does cheap and expensive checks possibly from a replica DB
//		*   - secure : does cheap and expensive checks, using the master as needed
//		* @param boolean $short Set this to true to stop after the first permission error.
//		* @return array Array of arrays of the arguments to wfMessage to explain permissions problems.
//		*/
//		protected function getUserPermissionsErrorsInternal(
//			$action, $user, $rigor = 'secure', $short = false
//		) {
//			if ($rigor === true) {
//				$rigor = 'secure'; // b/c
//			} elseif ($rigor === false) {
//				$rigor = 'quick'; // b/c
//			} elseif (!in_array($rigor, [ 'quick', 'full', 'secure' ])) {
//				throw new Exception("Invalid rigor parameter '$rigor'.");
//			}
//
//			# Read has special handling
//			if ($action == 'read') {
//				$checks = [
//					'checkPermissionHooks',
//					'checkReadPermissions',
//					'checkUserBlock', // for wgBlockDisablesLogin
//				];
//			# Don't call checkSpecialsAndNSPermissions or checkCSSandJSPermissions
//			# here as it will lead to duplicate error messages. This is okay to do
//			# since anywhere that checks for create will also check for edit, and
//			# those checks are called for edit.
//			} elseif ($action == 'create') {
//				$checks = [
//					'checkQuickPermissions',
//					'checkPermissionHooks',
//					'checkPageRestrictions',
//					'checkCascadingSourcesRestrictions',
//					'checkActionPermissions',
//					'checkUserBlock'
//				];
//			} else {
//				$checks = [
//					'checkQuickPermissions',
//					'checkPermissionHooks',
//					'checkSpecialsAndNSPermissions',
//					'checkCSSandJSPermissions',
//					'checkPageRestrictions',
//					'checkCascadingSourcesRestrictions',
//					'checkActionPermissions',
//					'checkUserBlock'
//				];
//			}
//
//			$errors = [];
//			while (count($checks) > 0 &&
//					!($short && count($errors) > 0)) {
//				$method = array_shift($checks);
//				$errors = $this.$method($action, $user, $errors, $rigor, $short);
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Get a filtered list of all restriction types supported by this wiki.
//		* @param boolean $exists True to get all restriction types that apply to
//		* titles that do exist, False for all restriction types that apply to
//		* titles that do not exist
//		* @return array
//		*/
//		public static function getFilteredRestrictionTypes($exists = true) {
//			global $wgRestrictionTypes;
//			$types = $wgRestrictionTypes;
//			if ($exists) {
//				# Remove the create restriction for existing titles
//				$types = array_diff($types, [ 'create' ]);
//			} else {
//				# Only the create and upload restrictions apply to non-existing titles
//				$types = array_intersect($types, [ 'create', 'upload' ]);
//			}
//			return $types;
//		}
//
//		/**
//		* Returns restriction types for the current Title
//		*
//		* @return array Applicable restriction types
//		*/
//		public function getRestrictionTypes() {
//			if ($this.isSpecialPage()) {
//				return [];
//			}
//
//			$types = self::getFilteredRestrictionTypes($this.exists());
//
//			if ($this.getNamespace() != NS_FILE) {
//				# Remove the upload restriction for non-file titles
//				$types = array_diff($types, [ 'upload' ]);
//			}
//
//			Hooks::run('TitleGetRestrictionTypes', [ $this, &$types ]);
//
//			wfDebug(__METHOD__ . ': applicable restrictions to [[' .
//				$this.getPrefixedText() . ']] are {' . implode(',', $types) . "}\n");
//
//			return $types;
//		}
//
//		/**
//		* Is this title subject to title protection?
//		* Title protection is the one applied against creation of such title.
//		*
//		* @return array|boolean An associative array representing any existent title
//		*   protection, or false if there's none.
//		*/
//		public function getTitleProtection() {
//			// Can't protect pages in special namespaces
//			if ($this.getNamespace() < 0) {
//				return false;
//			}
//
//			// Can't protect pages that exist.
//			if ($this.exists()) {
//				return false;
//			}
//
//			if ($this.mTitleProtection === null) {
//				$dbr = wfGetDB(DB_REPLICA);
//				$res = $dbr.select(
//					'protected_titles',
//					[
//						'user' => 'pt_user',
//						'reason' => 'pt_reason',
//						'expiry' => 'pt_expiry',
//						'permission' => 'pt_create_perm'
//					],
//					[ 'pt_namespace' => $this.getNamespace(), 'pt_title' => $this.getDBkey() ],
//					__METHOD__
//				);
//
//				// fetchRow returns false if there are no rows.
//				$row = $dbr.fetchRow($res);
//				if ($row) {
//					if ($row['permission'] == 'sysop') {
//						$row['permission'] = 'editprotected'; // B/C
//					}
//					if ($row['permission'] == 'autoconfirmed') {
//						$row['permission'] = 'editsemiprotected'; // B/C
//					}
//					$row['expiry'] = $dbr.decodeExpiry($row['expiry']);
//				}
//				$this.mTitleProtection = $row;
//			}
//			return $this.mTitleProtection;
//		}
//
//		/**
//		* Remove any title protection due to page existing
//		*/
//		public function deleteTitleProtection() {
//			$dbw = wfGetDB(DB_MASTER);
//
//			$dbw.delete(
//				'protected_titles',
//				[ 'pt_namespace' => $this.getNamespace(), 'pt_title' => $this.getDBkey() ],
//				__METHOD__
//			);
//			$this.mTitleProtection = false;
//		}
//
//		/**
//		* Is this page "semi-protected" - the *only* protection levels are listed
//		* in $wgSemiprotectedRestrictionLevels?
//		*
//		* @param String $action Action to check (default: edit)
//		* @return boolean
//		*/
//		public function isSemiProtected($action = 'edit') {
//			global $wgSemiprotectedRestrictionLevels;
//
//			$restrictions = $this.getRestrictions($action);
//			$semi = $wgSemiprotectedRestrictionLevels;
//			if (!$restrictions || !$semi) {
//				// Not protected, or all protection is full protection
//				return false;
//			}
//
//			// Remap autoconfirmed to editsemiprotected for BC
//			foreach (array_keys($semi, 'autoconfirmed') as $key) {
//				$semi[$key] = 'editsemiprotected';
//			}
//			foreach (array_keys($restrictions, 'autoconfirmed') as $key) {
//				$restrictions[$key] = 'editsemiprotected';
//			}
//
//			return !array_diff($restrictions, $semi);
//		}
//
//		/**
//		* Does the title correspond to a protected article?
//		*
//		* @param String $action The action the page is protected from,
//		* by default checks all actions.
//		* @return boolean
//		*/
//		public function isProtected($action = '') {
//			global $wgRestrictionLevels;
//
//			$restrictionTypes = $this.getRestrictionTypes();
//
//			# Special pages have inherent protection
//			if ($this.isSpecialPage()) {
//				return true;
//			}
//
//			# Check regular protection levels
//			foreach ($restrictionTypes as $type) {
//				if ($action == $type || $action == '') {
//					$r = $this.getRestrictions($type);
//					foreach ($wgRestrictionLevels as $level) {
//						if (in_array($level, $r) && $level != '') {
//							return true;
//						}
//					}
//				}
//			}
//
//			return false;
//		}
//
//		/**
//		* Determines if $user is unable to edit this page because it has been protected
//		* by $wgNamespaceProtection.
//		*
//		* @param User $user User Object to check permissions
//		* @return boolean
//		*/
//		public function isNamespaceProtected(User $user) {
//			global $wgNamespaceProtection;
//
//			if (isset($wgNamespaceProtection[$this.mNamespace])) {
//				foreach ((array)$wgNamespaceProtection[$this.mNamespace] as $right) {
//					if ($right != '' && !$user.isAllowed($right)) {
//						return true;
//					}
//				}
//			}
//			return false;
//		}
//
//		/**
//		* Cascading protection: Return true if cascading restrictions apply to this page, false if not.
//		*
//		* @return boolean If the page is subject to cascading restrictions.
//		*/
//		public function isCascadeProtected() {
//			list($sources, /* $restrictions */) = $this.getCascadeProtectionSources(false);
//			return ($sources > 0);
//		}
//
//		/**
//		* Determines whether cascading protection sources have already been loaded from
//		* the database.
//		*
//		* @param boolean $getPages True to check if the pages are loaded, or false to check
//		* if the status is loaded.
//		* @return boolean Whether or not the specified information has been loaded
//		* @since 1.23
//		*/
//		public function areCascadeProtectionSourcesLoaded($getPages = true) {
//			return $getPages ? $this.mCascadeSources !== null : $this.mHasCascadingRestrictions !== null;
//		}
//
//		/**
//		* Cascading protection: Get the source of any cascading restrictions on this page.
//		*
//		* @param boolean $getPages Whether or not to retrieve the actual pages
//		*        that the restrictions have come from and the actual restrictions
//		*        themselves.
//		* @return array Two elements: First is an array of Title objects of the
//		*        pages from which cascading restrictions have come, false for
//		*        none, or true if such restrictions exist but $getPages was not
//		*        set. Second is an array like that returned by
//		*        Title::getAllRestrictions(), or an empty array if $getPages is
//		*        false.
//		*/
//		public function getCascadeProtectionSources($getPages = true) {
//			$pagerestrictions = [];
//
//			if ($this.mCascadeSources !== null && $getPages) {
//				return [ $this.mCascadeSources, $this.mCascadingRestrictions ];
//			} elseif ($this.mHasCascadingRestrictions !== null && !$getPages) {
//				return [ $this.mHasCascadingRestrictions, $pagerestrictions ];
//			}
//
//			$dbr = wfGetDB(DB_REPLICA);
//
//			if ($this.getNamespace() == NS_FILE) {
//				$tables = [ 'imagelinks', 'page_restrictions' ];
//				$where_clauses = [
//					'il_to' => $this.getDBkey(),
//					'il_from=pr_page',
//					'pr_cascade' => 1
//				];
//			} else {
//				$tables = [ 'templatelinks', 'page_restrictions' ];
//				$where_clauses = [
//					'tl_namespace' => $this.getNamespace(),
//					'tl_title' => $this.getDBkey(),
//					'tl_from=pr_page',
//					'pr_cascade' => 1
//				];
//			}
//
//			if ($getPages) {
//				$cols = [ 'pr_page', 'page_namespace', 'page_title',
//					'pr_expiry', 'pr_type', 'pr_level' ];
//				$where_clauses[] = 'page_id=pr_page';
//				$tables[] = 'page';
//			} else {
//				$cols = [ 'pr_expiry' ];
//			}
//
//			$res = $dbr.select($tables, $cols, $where_clauses, __METHOD__);
//
//			$sources = $getPages ? [] : false;
//			$now = wfTimestampNow();
//
//			foreach ($res as $row) {
//				$expiry = $dbr.decodeExpiry($row.pr_expiry);
//				if ($expiry > $now) {
//					if ($getPages) {
//						$page_id = $row.pr_page;
//						$page_ns = $row.page_namespace;
//						$page_title = $row.page_title;
//						$sources[$page_id] = Title::makeTitle($page_ns, $page_title);
//						# Add groups needed for each restriction type if its not already there
//						# Make sure this restriction type still exists
//
//						if (!isset($pagerestrictions[$row.pr_type])) {
//							$pagerestrictions[$row.pr_type] = [];
//						}
//
//						if (
//							isset($pagerestrictions[$row.pr_type])
//							&& !in_array($row.pr_level, $pagerestrictions[$row.pr_type])
//						) {
//							$pagerestrictions[$row.pr_type][] = $row.pr_level;
//						}
//					} else {
//						$sources = true;
//					}
//				}
//			}
//
//			if ($getPages) {
//				$this.mCascadeSources = $sources;
//				$this.mCascadingRestrictions = $pagerestrictions;
//			} else {
//				$this.mHasCascadingRestrictions = $sources;
//			}
//
//			return [ $sources, $pagerestrictions ];
//		}
//
//		/**
//		* Accessor for mRestrictionsLoaded
//		*
//		* @return boolean Whether or not the page's restrictions have already been
//		* loaded from the database
//		* @since 1.23
//		*/
//		public function areRestrictionsLoaded() {
//			return $this.mRestrictionsLoaded;
//		}
//
//		/**
//		* Accessor/initialisation for mRestrictions
//		*
//		* @param String $action Action that permission needs to be checked for
//		* @return array Restriction levels needed to take the action. All levels are
//		*     required. Note that restriction levels are normally user rights, but 'sysop'
//		*     and 'autoconfirmed' are also allowed for backwards compatibility. These should
//		*     be mapped to 'editprotected' and 'editsemiprotected' respectively.
//		*/
//		public function getRestrictions($action) {
//			if (!$this.mRestrictionsLoaded) {
//				$this.loadRestrictions();
//			}
//			return isset($this.mRestrictions[$action])
//					? $this.mRestrictions[$action]
//					: [];
//		}
//
//		/**
//		* Accessor/initialisation for mRestrictions
//		*
//		* @return array Keys are actions, values are arrays as returned by
//		*     Title::getRestrictions()
//		* @since 1.23
//		*/
//		public function getAllRestrictions() {
//			if (!$this.mRestrictionsLoaded) {
//				$this.loadRestrictions();
//			}
//			return $this.mRestrictions;
//		}
//
//		/**
//		* Get the expiry time for the restriction against a given action
//		*
//		* @param String $action
//		* @return String|boolean 14-char timestamp, or 'infinity' if the page is protected forever
//		*     or not protected at all, or false if the action is not recognised.
//		*/
//		public function getRestrictionExpiry($action) {
//			if (!$this.mRestrictionsLoaded) {
//				$this.loadRestrictions();
//			}
//			return isset($this.mRestrictionsExpiry[$action]) ? $this.mRestrictionsExpiry[$action] : false;
//		}
//
//		/**
//		* Returns cascading restrictions for the current article
//		*
//		* @return boolean
//		*/
//		function areRestrictionsCascading() {
//			if (!$this.mRestrictionsLoaded) {
//				$this.loadRestrictions();
//			}
//
//			return $this.mCascadeRestriction;
//		}
//
//		/**
//		* Compiles list of active page restrictions from both page table (pre 1.10)
//		* and page_restrictions table for this existing page.
//		* Public for usage by LiquidThreads.
//		*
//		* @param array $rows Array of db result objects
//		* @param String $oldFashionedRestrictions Comma-separated list of page
//		*   restrictions from page table (pre 1.10)
//		*/
//		public function loadRestrictionsFromRows($rows, $oldFashionedRestrictions = null) {
//			$dbr = wfGetDB(DB_REPLICA);
//
//			$restrictionTypes = $this.getRestrictionTypes();
//
//			foreach ($restrictionTypes as $type) {
//				$this.mRestrictions[$type] = [];
//				$this.mRestrictionsExpiry[$type] = 'infinity';
//			}
//
//			$this.mCascadeRestriction = false;
//
//			# Backwards-compatibility: also load the restrictions from the page record (old format).
//			if ($oldFashionedRestrictions !== null) {
//				$this.mOldRestrictions = $oldFashionedRestrictions;
//			}
//
//			if ($this.mOldRestrictions === false) {
//				$this.mOldRestrictions = $dbr.selectField('page', 'page_restrictions',
//					[ 'page_id' => $this.getArticleID() ], __METHOD__);
//			}
//
//			if ($this.mOldRestrictions != '') {
//				foreach (explode(':', trim($this.mOldRestrictions)) as $restrict) {
//					$temp = explode('=', trim($restrict));
//					if (count($temp) == 1) {
//						// old old format should be treated as edit/move restriction
//						$this.mRestrictions['edit'] = explode(',', trim($temp[0]));
//						$this.mRestrictions['move'] = explode(',', trim($temp[0]));
//					} else {
//						$restriction = trim($temp[1]);
//						if ($restriction != '') { // some old entries are empty
//							$this.mRestrictions[$temp[0]] = explode(',', $restriction);
//						}
//					}
//				}
//			}
//
//			if (count($rows)) {
//				# Current system - load second to make them override.
//				$now = wfTimestampNow();
//
//				# Cycle through all the restrictions.
//				foreach ($rows as $row) {
//					// Don't take care of restrictions types that aren't allowed
//					if (!in_array($row.pr_type, $restrictionTypes)) {
//						continue;
//					}
//
//					// This code should be refactored, now that it's being used more generally,
//					// But I don't really see any harm in leaving it in Block for now -werdna
//					$expiry = $dbr.decodeExpiry($row.pr_expiry);
//
//					// Only apply the restrictions if they haven't expired!
//					if (!$expiry || $expiry > $now) {
//						$this.mRestrictionsExpiry[$row.pr_type] = $expiry;
//						$this.mRestrictions[$row.pr_type] = explode(',', trim($row.pr_level));
//
//						$this.mCascadeRestriction |= $row.pr_cascade;
//					}
//				}
//			}
//
//			$this.mRestrictionsLoaded = true;
//		}
//
//		/**
//		* Load restrictions from the page_restrictions table
//		*
//		* @param String $oldFashionedRestrictions Comma-separated list of page
//		*   restrictions from page table (pre 1.10)
//		*/
//		public function loadRestrictions($oldFashionedRestrictions = null) {
//			if ($this.mRestrictionsLoaded) {
//				return;
//			}
//
//			$id = $this.getArticleID();
//			if ($id) {
//				$cache = ObjectCache::getMainWANInstance();
//				$rows = $cache.getWithSetCallback(
//					// Page protections always leave a new null revision
//					$cache.makeKey('page-restrictions', $id, $this.getLatestRevID()),
//					$cache::TTL_DAY,
//					function ($curValue, &$ttl, array &$setOpts) {
//						$dbr = wfGetDB(DB_REPLICA);
//
//						$setOpts += Database::getCacheSetOptions($dbr);
//
//						return iterator_to_array(
//							$dbr.select(
//								'page_restrictions',
//								[ 'pr_type', 'pr_expiry', 'pr_level', 'pr_cascade' ],
//								[ 'pr_page' => $this.getArticleID() ],
//								__METHOD__
//							)
//						);
//					}
//				);
//
//				$this.loadRestrictionsFromRows($rows, $oldFashionedRestrictions);
//			} else {
//				$title_protection = $this.getTitleProtection();
//
//				if ($title_protection) {
//					$now = wfTimestampNow();
//					$expiry = wfGetDB(DB_REPLICA).decodeExpiry($title_protection['expiry']);
//
//					if (!$expiry || $expiry > $now) {
//						// Apply the restrictions
//						$this.mRestrictionsExpiry['create'] = $expiry;
//						$this.mRestrictions['create'] =
//							explode(',', trim($title_protection['permission']));
//					} else { // Get rid of the old restrictions
//						$this.mTitleProtection = false;
//					}
//				} else {
//					$this.mRestrictionsExpiry['create'] = 'infinity';
//				}
//				$this.mRestrictionsLoaded = true;
//			}
//		}
//
//		/**
//		* Flush the protection cache in this Object and force reload from the database.
//		* This is used when updating protection from WikiPage::doUpdateRestrictions().
//		*/
//		public function flushRestrictions() {
//			$this.mRestrictionsLoaded = false;
//			$this.mTitleProtection = null;
//		}
//
//		/**
//		* Purge expired restrictions from the page_restrictions table
//		*
//		* This will purge no more than $wgUpdateRowsPerQuery page_restrictions rows
//		*/
//		static function purgeExpiredRestrictions() {
//			if (wfReadOnly()) {
//				return;
//			}
//
//			DeferredUpdates::addUpdate(new AtomicSectionUpdate(
//				wfGetDB(DB_MASTER),
//				__METHOD__,
//				function (IDatabase $dbw, $fname) {
//					$config = MediaWikiServices::getInstance().getMainConfig();
//					$ids = $dbw.selectFieldValues(
//						'page_restrictions',
//						'pr_id',
//						[ 'pr_expiry < ' . $dbw.addQuotes($dbw.timestamp()) ],
//						$fname,
//						[ 'LIMIT' => $config.get('UpdateRowsPerQuery') ] // T135470
//					);
//					if ($ids) {
//						$dbw.delete('page_restrictions', [ 'pr_id' => $ids ], $fname);
//					}
//				}
//			));
//
//			DeferredUpdates::addUpdate(new AtomicSectionUpdate(
//				wfGetDB(DB_MASTER),
//				__METHOD__,
//				function (IDatabase $dbw, $fname) {
//					$dbw.delete(
//						'protected_titles',
//						[ 'pt_expiry < ' . $dbw.addQuotes($dbw.timestamp()) ],
//						$fname
//					);
//				}
//			));
//		}
//
//		/**
//		* Does this have subpages?  (Warning, usually requires an extra DB query.)
//		*
//		* @return boolean
//		*/
//		public function hasSubpages() {
//			if (!MWNamespace::hasSubpages($this.mNamespace)) {
//				# Duh
//				return false;
//			}
//
//			# We dynamically add a member variable for the purpose of this method
//			# alone to cache the result.  There's no point in having it hanging
//			# around uninitialized in every Title Object; therefore we only add it
//			# if needed and don't declare it statically.
//			if ($this.mHasSubpages === null) {
//				$this.mHasSubpages = false;
//				$subpages = $this.getSubpages(1);
//				if ($subpages instanceof TitleArray) {
//					$this.mHasSubpages = (boolean)$subpages.count();
//				}
//			}
//
//			return $this.mHasSubpages;
//		}
//
//		/**
//		* Get all subpages of this page.
//		*
//		* @param int $limit Maximum number of subpages to fetch; -1 for no limit
//		* @return TitleArray|array TitleArray, or empty array if this page's namespace
//		*  doesn't allow subpages
//		*/
//		public function getSubpages($limit = -1) {
//			if (!MWNamespace::hasSubpages($this.getNamespace())) {
//				return [];
//			}
//
//			$dbr = wfGetDB(DB_REPLICA);
//			$conds['page_namespace'] = $this.getNamespace();
//			$conds[] = 'page_title ' . $dbr.buildLike($this.getDBkey() . '/', $dbr.anyString());
//			$options = [];
//			if ($limit > -1) {
//				$options['LIMIT'] = $limit;
//			}
//			$this.mSubpages = TitleArray::newFromResult(
//				$dbr.select('page',
//					[ 'page_id', 'page_namespace', 'page_title', 'page_is_redirect' ],
//					$conds,
//					__METHOD__,
//					$options
//				)
//			);
//			return $this.mSubpages;
//		}
//
//		/**
//		* Is there a version of this page in the deletion archive?
//		*
//		* @return int The number of archived revisions
//		*/
//		public function isDeleted() {
//			if ($this.getNamespace() < 0) {
//				$n = 0;
//			} else {
//				$dbr = wfGetDB(DB_REPLICA);
//
//				$n = $dbr.selectField('archive', 'COUNT(*)',
//					[ 'ar_namespace' => $this.getNamespace(), 'ar_title' => $this.getDBkey() ],
//					__METHOD__
//				);
//				if ($this.getNamespace() == NS_FILE) {
//					$n += $dbr.selectField('filearchive', 'COUNT(*)',
//						[ 'fa_name' => $this.getDBkey() ],
//						__METHOD__
//					);
//				}
//			}
//			return (int)$n;
//		}
//
//		/**
//		* Is there a version of this page in the deletion archive?
//		*
//		* @return boolean
//		*/
//		public function isDeletedQuick() {
//			if ($this.getNamespace() < 0) {
//				return false;
//			}
//			$dbr = wfGetDB(DB_REPLICA);
//			$deleted = (boolean)$dbr.selectField('archive', '1',
//				[ 'ar_namespace' => $this.getNamespace(), 'ar_title' => $this.getDBkey() ],
//				__METHOD__
//			);
//			if (!$deleted && $this.getNamespace() == NS_FILE) {
//				$deleted = (boolean)$dbr.selectField('filearchive', '1',
//					[ 'fa_name' => $this.getDBkey() ],
//					__METHOD__
//				);
//			}
//			return $deleted;
//		}
//
//		/**
//		* Get the article ID for this Title from the link cache,
//		* adding it if necessary
//		*
//		* @param int $flags A bit field; may be Title::GAID_FOR_UPDATE to select
//		*  for update
//		* @return int The ID
//		*/
//		public function getArticleID($flags = 0) {
//			if ($this.getNamespace() < 0) {
//				$this.mArticleID = 0;
//				return $this.mArticleID;
//			}
//			$linkCache = LinkCache::singleton();
//			if ($flags & self::GAID_FOR_UPDATE) {
//				$oldUpdate = $linkCache.forUpdate(true);
//				$linkCache.clearLink($this);
//				$this.mArticleID = $linkCache.addLinkObj($this);
//				$linkCache.forUpdate($oldUpdate);
//			} else {
//				if (-1 == $this.mArticleID) {
//					$this.mArticleID = $linkCache.addLinkObj($this);
//				}
//			}
//			return $this.mArticleID;
//		}
//
//		/**
//		* Is this an article that is a redirect page?
//		* Uses link cache, adding it if necessary
//		*
//		* @param int $flags A bit field; may be Title::GAID_FOR_UPDATE to select for update
//		* @return boolean
//		*/
//		public function isRedirect($flags = 0) {
//			if (!is_null($this.mRedirect)) {
//				return $this.mRedirect;
//			}
//			if (!$this.getArticleID($flags)) {
//				$this.mRedirect = false;
//				return $this.mRedirect;
//			}
//
//			$linkCache = LinkCache::singleton();
//			$linkCache.addLinkObj($this); # in case we already had an article ID
//			$cached = $linkCache.getGoodLinkFieldObj($this, 'redirect');
//			if ($cached === null) {
//				# Trust LinkCache's state over our own
//				# LinkCache is telling us that the page doesn't exist, despite there being cached
//				# data relating to an existing page in $this.mArticleID. Updaters should clear
//				# LinkCache as appropriate, or use $flags = Title::GAID_FOR_UPDATE. If that flag is
//				# set, then LinkCache will definitely be up to date here, since getArticleID() forces
//				# LinkCache to refresh its data from the master.
//				$this.mRedirect = false;
//				return $this.mRedirect;
//			}
//
//			$this.mRedirect = (boolean)$cached;
//
//			return $this.mRedirect;
//		}
//
//		/**
//		* What is the length of this page?
//		* Uses link cache, adding it if necessary
//		*
//		* @param int $flags A bit field; may be Title::GAID_FOR_UPDATE to select for update
//		* @return int
//		*/
//		public function getLength($flags = 0) {
//			if ($this.mLength != -1) {
//				return $this.mLength;
//			}
//			if (!$this.getArticleID($flags)) {
//				$this.mLength = 0;
//				return $this.mLength;
//			}
//			$linkCache = LinkCache::singleton();
//			$linkCache.addLinkObj($this); # in case we already had an article ID
//			$cached = $linkCache.getGoodLinkFieldObj($this, 'length');
//			if ($cached === null) {
//				# Trust LinkCache's state over our own, as for isRedirect()
//				$this.mLength = 0;
//				return $this.mLength;
//			}
//
//			$this.mLength = intval($cached);
//
//			return $this.mLength;
//		}
//
//		/**
//		* What is the page_latest field for this page?
//		*
//		* @param int $flags A bit field; may be Title::GAID_FOR_UPDATE to select for update
//		* @return int Int or 0 if the page doesn't exist
//		*/
//		public function getLatestRevID($flags = 0) {
//			if (!($flags & Title::GAID_FOR_UPDATE) && $this.mLatestID !== false) {
//				return intval($this.mLatestID);
//			}
//			if (!$this.getArticleID($flags)) {
//				$this.mLatestID = 0;
//				return $this.mLatestID;
//			}
//			$linkCache = LinkCache::singleton();
//			$linkCache.addLinkObj($this); # in case we already had an article ID
//			$cached = $linkCache.getGoodLinkFieldObj($this, 'revision');
//			if ($cached === null) {
//				# Trust LinkCache's state over our own, as for isRedirect()
//				$this.mLatestID = 0;
//				return $this.mLatestID;
//			}
//
//			$this.mLatestID = intval($cached);
//
//			return $this.mLatestID;
//		}
//
//		/**
//		* This clears some fields in this Object, and clears any associated
//		* keys in the "bad links" section of the link cache.
//		*
//		* - This is called from WikiPage::doEditContent() and WikiPage::insertOn() to allow
//		* loading of the new page_id. It's also called from
//		* WikiPage::doDeleteArticleReal()
//		*
//		* @param int $newid The new Article ID
//		*/
//		public function resetArticleID($newid) {
//			$linkCache = LinkCache::singleton();
//			$linkCache.clearLink($this);
//
//			if ($newid === false) {
//				$this.mArticleID = -1;
//			} else {
//				$this.mArticleID = intval($newid);
//			}
//			$this.mRestrictionsLoaded = false;
//			$this.mRestrictions = [];
//			$this.mOldRestrictions = false;
//			$this.mRedirect = null;
//			$this.mLength = -1;
//			$this.mLatestID = false;
//			$this.mContentModel = false;
//			$this.mEstimateRevisions = null;
//			$this.mPageLanguage = false;
//			$this.mDbPageLanguage = false;
//			$this.mIsBigDeletion = null;
//		}
//
//		public static function clearCaches() {
//			$linkCache = LinkCache::singleton();
//			$linkCache.clear();
//
//			$titleCache = self::getTitleCache();
//			$titleCache.clear();
//		}
//
//		/**
//		* Capitalize a text String for a title if it belongs to a namespace that capitalizes
//		*
//		* @param String $text Containing title to capitalize
//		* @param int $ns Namespace index, defaults to NS_MAIN
//		* @return String Containing capitalized title
//		*/
//		public static function capitalize($text, $ns = NS_MAIN) {
//			global $wgContLang;
//
//			if (MWNamespace::isCapitalized($ns)) {
//				return $wgContLang.ucfirst($text);
//			} else {
//				return $text;
//			}
//		}
//
//		/**
//		* Secure and split - main initialisation function for this Object
//		*
//		* Assumes that mDbkeyform has been set, and is urldecoded
//		* and uses underscores, but not otherwise munged.  This function
//		* removes illegal characters, splits off the interwiki and
//		* namespace prefixes, sets the other forms, and canonicalizes
//		* everything.
//		*
//		* @throws MalformedTitleException On invalid titles
//		* @return boolean True on success
//		*/
//		private function secureAndSplit() {
//			# Initialisation
//			$this.mInterwiki = '';
//			$this.mFragment = '';
//			$this.mNamespace = $this.mDefaultNamespace; # Usually NS_MAIN
//
//			$dbkey = $this.mDbkeyform;
//
//			// @note: splitTitleString() is a temporary hack to allow MediaWikiTitleCodec to share
//			//        the parsing code with Title, while avoiding massive refactoring.
//			// @todo: get rid of secureAndSplit, refactor parsing code.
//			// @note: getTitleParser() returns a TitleParser implementation which does not have a
//			//        splitTitleString method, but the only implementation (MediaWikiTitleCodec) does
//			$titleCodec = MediaWikiServices::getInstance().getTitleParser();
//			// MalformedTitleException can be thrown here
//			$parts = $titleCodec.splitTitleString($dbkey, $this.getDefaultNamespace());
//
//			# Fill fields
//			$this.setFragment('#' . $parts['fragment']);
//			$this.mInterwiki = $parts['interwiki'];
//			$this.mLocalInterwiki = $parts['local_interwiki'];
//			$this.mNamespace = $parts['namespace'];
//			$this.mUserCaseDBKey = $parts['user_case_dbkey'];
//
//			$this.mDbkeyform = $parts['dbkey'];
//			$this.mUrlform = wfUrlencode($this.mDbkeyform);
//			$this.mTextform = strtr($this.mDbkeyform, '_', ' ');
//
//			# We already know that some pages won't be in the database!
//			if ($this.isExternal() || $this.mNamespace == NS_SPECIAL) {
//				$this.mArticleID = 0;
//			}
//
//			return true;
//		}
//
//		/**
//		* Get an array of Title objects linking to this Title
//		* Also stores the IDs in the link cache.
//		*
//		* WARNING: do not use this function on arbitrary user-supplied titles!
//		* On heavily-used templates it will max out the memory.
//		*
//		* @param array $options May be FOR UPDATE
//		* @param String $table Table name
//		* @param String $prefix Fields prefix
//		* @return Title[] Array of Title objects linking here
//		*/
//		public function getLinksTo($options = [], $table = 'pagelinks', $prefix = 'pl') {
//			if (count($options) > 0) {
//				$db = wfGetDB(DB_MASTER);
//			} else {
//				$db = wfGetDB(DB_REPLICA);
//			}
//
//			$res = $db.select(
//				[ 'page', $table ],
//				self::getSelectFields(),
//				[
//					"{$prefix}_from=page_id",
//					"{$prefix}_namespace" => $this.getNamespace(),
//					"{$prefix}_title" => $this.getDBkey() ],
//				__METHOD__,
//				$options
//			);
//
//			$retVal = [];
//			if ($res.numRows()) {
//				$linkCache = LinkCache::singleton();
//				foreach ($res as $row) {
//					$titleObj = Title::makeTitle($row.page_namespace, $row.page_title);
//					if ($titleObj) {
//						$linkCache.addGoodLinkObjFromRow($titleObj, $row);
//						$retVal[] = $titleObj;
//					}
//				}
//			}
//			return $retVal;
//		}
//
//		/**
//		* Get an array of Title objects using this Title as a template
//		* Also stores the IDs in the link cache.
//		*
//		* WARNING: do not use this function on arbitrary user-supplied titles!
//		* On heavily-used templates it will max out the memory.
//		*
//		* @param array $options Query option to Database::select()
//		* @return Title[] Array of Title the Title objects linking here
//		*/
//		public function getTemplateLinksTo($options = []) {
//			return $this.getLinksTo($options, 'templatelinks', 'tl');
//		}
//
//		/**
//		* Get an array of Title objects linked from this Title
//		* Also stores the IDs in the link cache.
//		*
//		* WARNING: do not use this function on arbitrary user-supplied titles!
//		* On heavily-used templates it will max out the memory.
//		*
//		* @param array $options Query option to Database::select()
//		* @param String $table Table name
//		* @param String $prefix Fields prefix
//		* @return array Array of Title objects linking here
//		*/
//		public function getLinksFrom($options = [], $table = 'pagelinks', $prefix = 'pl') {
//			$id = $this.getArticleID();
//
//			# If the page doesn't exist; there can't be any link from this page
//			if (!$id) {
//				return [];
//			}
//
//			$db = wfGetDB(DB_REPLICA);
//
//			$blNamespace = "{$prefix}_namespace";
//			$blTitle = "{$prefix}_title";
//
//			$res = $db.select(
//				[ $table, 'page' ],
//				array_merge(
//					[ $blNamespace, $blTitle ],
//					WikiPage::selectFields()
//				),
//				[ "{$prefix}_from" => $id ],
//				__METHOD__,
//				$options,
//				[ 'page' => [
//					'LEFT JOIN',
//					[ "page_namespace=$blNamespace", "page_title=$blTitle" ]
//				] ]
//			);
//
//			$retVal = [];
//			$linkCache = LinkCache::singleton();
//			foreach ($res as $row) {
//				if ($row.page_id) {
//					$titleObj = Title::newFromRow($row);
//				} else {
//					$titleObj = Title::makeTitle($row.$blNamespace, $row.$blTitle);
//					$linkCache.addBadLinkObj($titleObj);
//				}
//				$retVal[] = $titleObj;
//			}
//
//			return $retVal;
//		}
//
//		/**
//		* Get an array of Title objects used on this Title as a template
//		* Also stores the IDs in the link cache.
//		*
//		* WARNING: do not use this function on arbitrary user-supplied titles!
//		* On heavily-used templates it will max out the memory.
//		*
//		* @param array $options May be FOR UPDATE
//		* @return Title[] Array of Title the Title objects used here
//		*/
//		public function getTemplateLinksFrom($options = []) {
//			return $this.getLinksFrom($options, 'templatelinks', 'tl');
//		}
//
//		/**
//		* Get an array of Title objects referring to non-existent articles linked
//		* from this page.
//		*
//		* @todo check if needed (used only in SpecialBrokenRedirects.php, and
//		*   should use redirect table in this case).
//		* @return Title[] Array of Title the Title objects
//		*/
//		public function getBrokenLinksFrom() {
//			if ($this.getArticleID() == 0) {
//				# All links from article ID 0 are false positives
//				return [];
//			}
//
//			$dbr = wfGetDB(DB_REPLICA);
//			$res = $dbr.select(
//				[ 'page', 'pagelinks' ],
//				[ 'pl_namespace', 'pl_title' ],
//				[
//					'pl_from' => $this.getArticleID(),
//					'page_namespace IS NULL'
//				],
//				__METHOD__, [],
//				[
//					'page' => [
//						'LEFT JOIN',
//						[ 'pl_namespace=page_namespace', 'pl_title=page_title' ]
//					]
//				]
//			);
//
//			$retVal = [];
//			foreach ($res as $row) {
//				$retVal[] = Title::makeTitle($row.pl_namespace, $row.pl_title);
//			}
//			return $retVal;
//		}
//
//		/**
//		* Get a list of URLs to purge from the CDN cache when this
//		* page changes
//		*
//		* @return String[] Array of String the URLs
//		*/
//		public function getCdnUrls() {
//			$urls = [
//				$this.getInternalURL(),
//				$this.getInternalURL('action=history')
//			];
//
//			$pageLang = $this.getPageLanguage();
//			if ($pageLang.hasVariants()) {
//				$variants = $pageLang.getVariants();
//				foreach ($variants as $vCode) {
//					$urls[] = $this.getInternalURL($vCode);
//				}
//			}
//
//			// If we are looking at a css/js user subpage, purge the action=raw.
//			if ($this.isJsSubpage()) {
//				$urls[] = $this.getInternalURL('action=raw&ctype=text/javascript');
//			} elseif ($this.isCssSubpage()) {
//				$urls[] = $this.getInternalURL('action=raw&ctype=text/css');
//			}
//
//			Hooks::run('TitleSquidURLs', [ $this, &$urls ]);
//			return $urls;
//		}
//
//		/**
//		* @deprecated since 1.27 use getCdnUrls()
//		*/
//		public function getSquidURLs() {
//			return $this.getCdnUrls();
//		}
//
//		/**
//		* Purge all applicable CDN URLs
//		*/
//		public function purgeSquid() {
//			DeferredUpdates::addUpdate(
//				new CdnCacheUpdate($this.getCdnUrls()),
//				DeferredUpdates::PRESEND
//			);
//		}
//
//		/**
//		* Check whether a given move operation would be valid.
//		* Returns true if ok, or a getUserPermissionsErrors()-like array otherwise
//		*
//		* @deprecated since 1.25, use MovePage's methods instead
//		* @param Title $nt The new title
//		* @param boolean $auth Whether to check user permissions (uses $wgUser)
//		* @param String $reason Is the log summary of the move, used for spam checking
//		* @return array|boolean True on success, getUserPermissionsErrors()-like array on failure
//		*/
//		public function isValidMoveOperation(&$nt, $auth = true, $reason = '') {
//			global $wgUser;
//
//			if (!($nt instanceof Title)) {
//				// Normally we'd add this to $errors, but we'll get
//				// lots of syntax errors if $nt is not an Object
//				return [ [ 'badtitletext' ] ];
//			}
//
//			$mp = new MovePage($this, $nt);
//			$errors = $mp.isValidMove().getErrorsArray();
//			if ($auth) {
//				$errors = wfMergeErrorArrays(
//					$errors,
//					$mp.checkPermissions($wgUser, $reason).getErrorsArray()
//				);
//			}
//
//			return $errors ?: true;
//		}
//
//		/**
//		* Check if the requested move target is a valid file move target
//		* @todo move this to MovePage
//		* @param Title $nt Target title
//		* @return array List of errors
//		*/
//		protected function validateFileMoveOperation($nt) {
//			global $wgUser;
//
//			$errors = [];
//
//			$destFile = wfLocalFile($nt);
//			$destFile.load(File::READ_LATEST);
//			if (!$wgUser.isAllowed('reupload-shared')
//				&& !$destFile.exists() && wfFindFile($nt)
//			) {
//				$errors[] = [ 'file-exists-sharedrepo' ];
//			}
//
//			return $errors;
//		}
//
//		/**
//		* Move a title to a new location
//		*
//		* @deprecated since 1.25, use the MovePage class instead
//		* @param Title $nt The new title
//		* @param boolean $auth Indicates whether $wgUser's permissions
//		*  should be checked
//		* @param String $reason The reason for the move
//		* @param boolean $createRedirect Whether to create a redirect from the old title to the new title.
//		*  Ignored if the user doesn't have the suppressredirect right.
//		* @param array $changeTags Applied to the entry in the move log and redirect page revision
//		* @return array|boolean True on success, getUserPermissionsErrors()-like array on failure
//		*/
//		public function moveTo(&$nt, $auth = true, $reason = '', $createRedirect = true,
//			array $changeTags = []) {
//
//			global $wgUser;
//			$err = $this.isValidMoveOperation($nt, $auth, $reason);
//			if (is_array($err)) {
//				// Auto-block user's IP if the account was "hard" blocked
//				$wgUser.spreadAnyEditBlock();
//				return $err;
//			}
//			// Check suppressredirect permission
//			if ($auth && !$wgUser.isAllowed('suppressredirect')) {
//				$createRedirect = true;
//			}
//
//			$mp = new MovePage($this, $nt);
//			$status = $mp.move($wgUser, $reason, $createRedirect, $changeTags);
//			if ($status.isOK()) {
//				return true;
//			} else {
//				return $status.getErrorsArray();
//			}
//		}
//
//		/**
//		* Move this page's subpages to be subpages of $nt
//		*
//		* @param Title $nt Move target
//		* @param boolean $auth Whether $wgUser's permissions should be checked
//		* @param String $reason The reason for the move
//		* @param boolean $createRedirect Whether to create redirects from the old subpages to
//		*     the new ones Ignored if the user doesn't have the 'suppressredirect' right
//		* @param array $changeTags Applied to the entry in the move log and redirect page revision
//		* @return array Array with old page titles as keys, and strings (new page titles) or
//		*     getUserPermissionsErrors()-like arrays (errors) as values, or a
//		*     getUserPermissionsErrors()-like error array with numeric indices if
//		*     no pages were moved
//		*/
//		public function moveSubpages($nt, $auth = true, $reason = '', $createRedirect = true,
//			array $changeTags = []) {
//
//			global $wgMaximumMovedPages;
//			// Check permissions
//			if (!$this.userCan('move-subpages')) {
//				return [
//					[ 'cant-move-subpages' ],
//				];
//			}
//			// Do the source and target namespaces support subpages?
//			if (!MWNamespace::hasSubpages($this.getNamespace())) {
//				return [
//					[ 'namespace-nosubpages', MWNamespace::getCanonicalName($this.getNamespace()) ],
//				];
//			}
//			if (!MWNamespace::hasSubpages($nt.getNamespace())) {
//				return [
//					[ 'namespace-nosubpages', MWNamespace::getCanonicalName($nt.getNamespace()) ],
//				];
//			}
//
//			$subpages = $this.getSubpages($wgMaximumMovedPages + 1);
//			$retval = [];
//			$count = 0;
//			foreach ($subpages as $oldSubpage) {
//				$count++;
//				if ($count > $wgMaximumMovedPages) {
//					$retval[$oldSubpage.getPrefixedText()] = [
//						[ 'movepage-max-pages', $wgMaximumMovedPages ],
//					];
//					break;
//				}
//
//				// We don't know whether this function was called before
//				// or after moving the root page, so check both
//				// $this and $nt
//				if ($oldSubpage.getArticleID() == $this.getArticleID()
//					|| $oldSubpage.getArticleID() == $nt.getArticleID()
//				) {
//					// When moving a page to a subpage of itself,
//					// don't move it twice
//					continue;
//				}
//				$newPageName = preg_replace(
//						'#^' . preg_quote($this.getDBkey(), '#') . '#',
//						StringUtils::escapeRegexReplacement($nt.getDBkey()), # bug 21234
//						$oldSubpage.getDBkey());
//				if ($oldSubpage.isTalkPage()) {
//					$newNs = $nt.getTalkPage().getNamespace();
//				} else {
//					$newNs = $nt.getSubjectPage().getNamespace();
//				}
//				# Bug 14385: we need makeTitleSafe because the new page names may
//				# be longer than 255 characters.
//				$newSubpage = Title::makeTitleSafe($newNs, $newPageName);
//
//				$success = $oldSubpage.moveTo($newSubpage, $auth, $reason, $createRedirect, $changeTags);
//				if ($success === true) {
//					$retval[$oldSubpage.getPrefixedText()] = $newSubpage.getPrefixedText();
//				} else {
//					$retval[$oldSubpage.getPrefixedText()] = $success;
//				}
//			}
//			return $retval;
//		}
//
//		/**
//		* Checks if this page is just a one-rev redirect.
//		* Adds synchronized, so don't use just for light purposes.
//		*
//		* @return boolean
//		*/
//		public function isSingleRevRedirect() {
//			global $wgContentHandlerUseDB;
//
//			$dbw = wfGetDB(DB_MASTER);
//
//			# Is it a redirect?
//			$fields = [ 'page_is_redirect', 'page_latest', 'page_id' ];
//			if ($wgContentHandlerUseDB) {
//				$fields[] = 'page_content_model';
//			}
//
//			$row = $dbw.selectRow('page',
//				$fields,
//				$this.pageCond(),
//				__METHOD__,
//				[ 'FOR UPDATE' ]
//			);
//			# Cache some fields we may want
//			$this.mArticleID = $row ? intval($row.page_id) : 0;
//			$this.mRedirect = $row ? (boolean)$row.page_is_redirect : false;
//			$this.mLatestID = $row ? intval($row.page_latest) : false;
//			$this.mContentModel = $row && isset($row.page_content_model)
//				? strval($row.page_content_model)
//				: false;
//
//			if (!$this.mRedirect) {
//				return false;
//			}
//			# Does the article have a history?
//			$row = $dbw.selectField([ 'page', 'revision' ],
//				'rev_id',
//				[ 'page_namespace' => $this.getNamespace(),
//					'page_title' => $this.getDBkey(),
//					'page_id=rev_page',
//					'page_latest != rev_id'
//				],
//				__METHOD__,
//				[ 'FOR UPDATE' ]
//			);
//			# Return true if there was no history
//			return ($row === false);
//		}
//
//		/**
//		* Checks if $this can be moved to a given Title
//		* - Selects for update, so don't call it unless you mean business
//		*
//		* @deprecated since 1.25, use MovePage's methods instead
//		* @param Title $nt The new title to check
//		* @return boolean
//		*/
//		public function isValidMoveTarget($nt) {
//			# Is it an existing file?
//			if ($nt.getNamespace() == NS_FILE) {
//				$file = wfLocalFile($nt);
//				$file.load(File::READ_LATEST);
//				if ($file.exists()) {
//					wfDebug(__METHOD__ . ": file exists\n");
//					return false;
//				}
//			}
//			# Is it a redirect with no history?
//			if (!$nt.isSingleRevRedirect()) {
//				wfDebug(__METHOD__ . ": not a one-rev redirect\n");
//				return false;
//			}
//			# Get the article text
//			$rev = Revision::newFromTitle($nt, false, Revision::READ_LATEST);
//			if (!is_object($rev)) {
//				return false;
//			}
//			$content = $rev.getContent();
//			# Does the redirect point to the source?
//			# Or is it a broken self-redirect, usually caused by namespace collisions?
//			$redirTitle = $content ? $content.getRedirectTarget() : null;
//
//			if ($redirTitle) {
//				if ($redirTitle.getPrefixedDBkey() != $this.getPrefixedDBkey() &&
//					$redirTitle.getPrefixedDBkey() != $nt.getPrefixedDBkey()) {
//					wfDebug(__METHOD__ . ": redirect points to other page\n");
//					return false;
//				} else {
//					return true;
//				}
//			} else {
//				# Fail safe (not a redirect after all. strange.)
//				wfDebug(__METHOD__ . ": failsafe: database sais " . $nt.getPrefixedDBkey() .
//							" is a redirect, but it doesn't contain a valid redirect.\n");
//				return false;
//			}
//		}
//
//		/**
//		* Get categories to which this Title belongs and return an array of
//		* categories' names.
//		*
//		* @return array Array of parents in the form:
//		*	  $parent => $currentarticle
//		*/
//		public function getParentCategories() {
//			global $wgContLang;
//
//			$data = [];
//
//			$titleKey = $this.getArticleID();
//
//			if ($titleKey === 0) {
//				return $data;
//			}
//
//			$dbr = wfGetDB(DB_REPLICA);
//
//			$res = $dbr.select(
//				'categorylinks',
//				'cl_to',
//				[ 'cl_from' => $titleKey ],
//				__METHOD__
//			);
//
//			if ($res.numRows() > 0) {
//				foreach ($res as $row) {
//					// $data[] = Title::newFromText($wgContLang.getNsText (NS_CATEGORY).':'.$row.cl_to);
//					$data[$wgContLang.getNsText(NS_CATEGORY) . ':' . $row.cl_to] = $this.getFullText();
//				}
//			}
//			return $data;
//		}
//
//		/**
//		* Get a tree of parent categories
//		*
//		* @param array $children Array with the children in the keys, to check for circular refs
//		* @return array Tree of parent categories
//		*/
//		public function getParentCategoryTree($children = []) {
//			$stack = [];
//			$parents = $this.getParentCategories();
//
//			if ($parents) {
//				foreach ($parents as $parent => $current) {
//					if (array_key_exists($parent, $children)) {
//						# Circular reference
//						$stack[$parent] = [];
//					} else {
//						$nt = Title::newFromText($parent);
//						if ($nt) {
//							$stack[$parent] = $nt.getParentCategoryTree($children + [ $parent => 1 ]);
//						}
//					}
//				}
//			}
//
//			return $stack;
//		}
//
//		/**
//		* Get an associative array for selecting this title from
//		* the "page" table
//		*
//		* @return array Array suitable for the $where parameter of DB::select()
//		*/
//		public function pageCond() {
//			if ($this.mArticleID > 0) {
//				// PK avoids secondary lookups in InnoDB, shouldn't hurt other DBs
//				return [ 'page_id' => $this.mArticleID ];
//			} else {
//				return [ 'page_namespace' => $this.mNamespace, 'page_title' => $this.mDbkeyform ];
//			}
//		}
//
//		/**
//		* Get the revision ID of the previous revision
//		*
//		* @param int $revId Revision ID. Get the revision that was before this one.
//		* @param int $flags Title::GAID_FOR_UPDATE
//		* @return int|boolean Old revision ID, or false if none exists
//		*/
//		public function getPreviousRevisionID($revId, $flags = 0) {
//			$db = ($flags & self::GAID_FOR_UPDATE) ? wfGetDB(DB_MASTER) : wfGetDB(DB_REPLICA);
//			$revId = $db.selectField('revision', 'rev_id',
//				[
//					'rev_page' => $this.getArticleID($flags),
//					'rev_id < ' . intval($revId)
//				],
//				__METHOD__,
//				[ 'ORDER BY' => 'rev_id DESC' ]
//			);
//
//			if ($revId === false) {
//				return false;
//			} else {
//				return intval($revId);
//			}
//		}
//
//		/**
//		* Get the revision ID of the next revision
//		*
//		* @param int $revId Revision ID. Get the revision that was after this one.
//		* @param int $flags Title::GAID_FOR_UPDATE
//		* @return int|boolean Next revision ID, or false if none exists
//		*/
//		public function getNextRevisionID($revId, $flags = 0) {
//			$db = ($flags & self::GAID_FOR_UPDATE) ? wfGetDB(DB_MASTER) : wfGetDB(DB_REPLICA);
//			$revId = $db.selectField('revision', 'rev_id',
//				[
//					'rev_page' => $this.getArticleID($flags),
//					'rev_id > ' . intval($revId)
//				],
//				__METHOD__,
//				[ 'ORDER BY' => 'rev_id' ]
//			);
//
//			if ($revId === false) {
//				return false;
//			} else {
//				return intval($revId);
//			}
//		}
//
//		/**
//		* Get the first revision of the page
//		*
//		* @param int $flags Title::GAID_FOR_UPDATE
//		* @return Revision|null If page doesn't exist
//		*/
//		public function getFirstRevision($flags = 0) {
//			$pageId = $this.getArticleID($flags);
//			if ($pageId) {
//				$db = ($flags & self::GAID_FOR_UPDATE) ? wfGetDB(DB_MASTER) : wfGetDB(DB_REPLICA);
//				$row = $db.selectRow('revision', Revision::selectFields(),
//					[ 'rev_page' => $pageId ],
//					__METHOD__,
//					[ 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 1 ]
//				);
//				if ($row) {
//					return new Revision($row);
//				}
//			}
//			return null;
//		}
//
//		/**
//		* Get the oldest revision timestamp of this page
//		*
//		* @param int $flags Title::GAID_FOR_UPDATE
//		* @return String MW timestamp
//		*/
//		public function getEarliestRevTime($flags = 0) {
//			$rev = $this.getFirstRevision($flags);
//			return $rev ? $rev.getTimestamp() : null;
//		}
//
//		/**
//		* Check if this is a new page
//		*
//		* @return boolean
//		*/
//		public function isNewPage() {
//			$dbr = wfGetDB(DB_REPLICA);
//			return (boolean)$dbr.selectField('page', 'page_is_new', $this.pageCond(), __METHOD__);
//		}
//
//		/**
//		* Check whether the number of revisions of this page surpasses $wgDeleteRevisionsLimit
//		*
//		* @return boolean
//		*/
//		public function isBigDeletion() {
//			global $wgDeleteRevisionsLimit;
//
//			if (!$wgDeleteRevisionsLimit) {
//				return false;
//			}
//
//			if ($this.mIsBigDeletion === null) {
//				$dbr = wfGetDB(DB_REPLICA);
//
//				$revCount = $dbr.selectRowCount(
//					'revision',
//					'1',
//					[ 'rev_page' => $this.getArticleID() ],
//					__METHOD__,
//					[ 'LIMIT' => $wgDeleteRevisionsLimit + 1 ]
//				);
//
//				$this.mIsBigDeletion = $revCount > $wgDeleteRevisionsLimit;
//			}
//
//			return $this.mIsBigDeletion;
//		}
//
//		/**
//		* Get the approximate revision count of this page.
//		*
//		* @return int
//		*/
//		public function estimateRevisionCount() {
//			if (!$this.exists()) {
//				return 0;
//			}
//
//			if ($this.mEstimateRevisions === null) {
//				$dbr = wfGetDB(DB_REPLICA);
//				$this.mEstimateRevisions = $dbr.estimateRowCount('revision', '*',
//					[ 'rev_page' => $this.getArticleID() ], __METHOD__);
//			}
//
//			return $this.mEstimateRevisions;
//		}
//
//		/**
//		* Get the number of revisions between the given revision.
//		* Used for diffs and other things that really need it.
//		*
//		* @param int|Revision $old Old revision or rev ID (first before range)
//		* @param int|Revision $new New revision or rev ID (first after range)
//		* @param int|null $max Limit of Revisions to count, will be incremented to detect truncations
//		* @return int Number of revisions between these revisions.
//		*/
//		public function countRevisionsBetween($old, $new, $max = null) {
//			if (!($old instanceof Revision)) {
//				$old = Revision::newFromTitle($this, (int)$old);
//			}
//			if (!($new instanceof Revision)) {
//				$new = Revision::newFromTitle($this, (int)$new);
//			}
//			if (!$old || !$new) {
//				return 0; // nothing to compare
//			}
//			$dbr = wfGetDB(DB_REPLICA);
//			$conds = [
//				'rev_page' => $this.getArticleID(),
//				'rev_timestamp > ' . $dbr.addQuotes($dbr.timestamp($old.getTimestamp())),
//				'rev_timestamp < ' . $dbr.addQuotes($dbr.timestamp($new.getTimestamp()))
//			];
//			if ($max !== null) {
//				return $dbr.selectRowCount('revision', '1',
//					$conds,
//					__METHOD__,
//					[ 'LIMIT' => $max + 1 ] // extra to detect truncation
//				);
//			} else {
//				return (int)$dbr.selectField('revision', 'count(*)', $conds, __METHOD__);
//			}
//		}
//
//		/**
//		* Get the authors between the given revisions or revision IDs.
//		* Used for diffs and other things that really need it.
//		*
//		* @since 1.23
//		*
//		* @param int|Revision $old Old revision or rev ID (first before range by default)
//		* @param int|Revision $new New revision or rev ID (first after range by default)
//		* @param int $limit Maximum number of authors
//		* @param String|array $options (Optional): Single option, or an array of options:
//		*     'include_old' Include $old in the range; $new is excluded.
//		*     'include_new' Include $new in the range; $old is excluded.
//		*     'include_both' Include both $old and $new in the range.
//		*     Unknown option values are ignored.
//		* @return array|null Names of revision authors in the range; null if not both revisions exist
//		*/
//		public function getAuthorsBetween($old, $new, $limit, $options = []) {
//			if (!($old instanceof Revision)) {
//				$old = Revision::newFromTitle($this, (int)$old);
//			}
//			if (!($new instanceof Revision)) {
//				$new = Revision::newFromTitle($this, (int)$new);
//			}
//			// XXX: what if Revision objects are passed in, but they don't refer to this title?
//			// Add $old.getPage() != $new.getPage() || $old.getPage() != $this.getArticleID()
//			// in the sanity check below?
//			if (!$old || !$new) {
//				return null; // nothing to compare
//			}
//			$authors = [];
//			$old_cmp = '>';
//			$new_cmp = '<';
//			$options = (array)$options;
//			if (in_array('include_old', $options)) {
//				$old_cmp = '>=';
//			}
//			if (in_array('include_new', $options)) {
//				$new_cmp = '<=';
//			}
//			if (in_array('include_both', $options)) {
//				$old_cmp = '>=';
//				$new_cmp = '<=';
//			}
//			// No DB query needed if $old and $new are the same or successive revisions:
//			if ($old.getId() === $new.getId()) {
//				return ($old_cmp === '>' && $new_cmp === '<') ?
//					[] :
//					[ $old.getUserText(Revision::RAW) ];
//			} elseif ($old.getId() === $new.getParentId()) {
//				if ($old_cmp === '>=' && $new_cmp === '<=') {
//					$authors[] = $old.getUserText(Revision::RAW);
//					if ($old.getUserText(Revision::RAW) != $new.getUserText(Revision::RAW)) {
//						$authors[] = $new.getUserText(Revision::RAW);
//					}
//				} elseif ($old_cmp === '>=') {
//					$authors[] = $old.getUserText(Revision::RAW);
//				} elseif ($new_cmp === '<=') {
//					$authors[] = $new.getUserText(Revision::RAW);
//				}
//				return $authors;
//			}
//			$dbr = wfGetDB(DB_REPLICA);
//			$res = $dbr.select('revision', 'DISTINCT rev_user_text',
//				[
//					'rev_page' => $this.getArticleID(),
//					"rev_timestamp $old_cmp " . $dbr.addQuotes($dbr.timestamp($old.getTimestamp())),
//					"rev_timestamp $new_cmp " . $dbr.addQuotes($dbr.timestamp($new.getTimestamp()))
//				], __METHOD__,
//				[ 'LIMIT' => $limit + 1 ] // add one so caller knows it was truncated
//			);
//			foreach ($res as $row) {
//				$authors[] = $row.rev_user_text;
//			}
//			return $authors;
//		}
//
//		/**
//		* Get the number of authors between the given revisions or revision IDs.
//		* Used for diffs and other things that really need it.
//		*
//		* @param int|Revision $old Old revision or rev ID (first before range by default)
//		* @param int|Revision $new New revision or rev ID (first after range by default)
//		* @param int $limit Maximum number of authors
//		* @param String|array $options (Optional): Single option, or an array of options:
//		*     'include_old' Include $old in the range; $new is excluded.
//		*     'include_new' Include $new in the range; $old is excluded.
//		*     'include_both' Include both $old and $new in the range.
//		*     Unknown option values are ignored.
//		* @return int Number of revision authors in the range; zero if not both revisions exist
//		*/
//		public function countAuthorsBetween($old, $new, $limit, $options = []) {
//			$authors = $this.getAuthorsBetween($old, $new, $limit, $options);
//			return $authors ? count($authors) : 0;
//		}
//
//		/**
//		* Compare with another title.
//		*
//		* @param Title $title
//		* @return boolean
//		*/
//		public function equals(Title $title) {
//			// Note: === is necessary for proper matching of number-like titles.
//			return $this.getInterwiki() === $title.getInterwiki()
//				&& $this.getNamespace() == $title.getNamespace()
//				&& $this.getDBkey() === $title.getDBkey();
//		}
//
//		/**
//		* Check if this title is a subpage of another title
//		*
//		* @param Title $title
//		* @return boolean
//		*/
//		public function isSubpageOf(Title $title) {
//			return $this.getInterwiki() === $title.getInterwiki()
//				&& $this.getNamespace() == $title.getNamespace()
//				&& strpos($this.getDBkey(), $title.getDBkey() . '/') === 0;
//		}
//
//		/**
//		* Check if page exists.  For historical reasons, this function simply
//		* checks for the existence of the title in the page table, and will
//		* thus return false for interwiki links, special pages and the like.
//		* If you want to know if a title can be meaningfully viewed, you should
//		* probably call the isKnown() method instead.
//		*
//		* @param int $flags An optional bit field; may be Title::GAID_FOR_UPDATE to check
//		*   from master/for update
//		* @return boolean
//		*/
//		public function exists($flags = 0) {
//			$exists = $this.getArticleID($flags) != 0;
//			Hooks::run('TitleExists', [ $this, &$exists ]);
//			return $exists;
//		}
//
//		/**
//		* Should links to this title be shown as potentially viewable (i.e. as
//		* "bluelinks"), even if there's no record by this title in the page
//		* table?
//		*
//		* This function is semi-deprecated for public use, as well as somewhat
//		* misleadingly named.  You probably just want to call isKnown(), which
//		* calls this function internally.
//		*
//		* (ISSUE: Most of these checks are cheap, but the file existence check
//		* can potentially be quite expensive.  Including it here fixes a lot of
//		* existing code, but we might want to add an optional parameter to skip
//		* it and any other expensive checks.)
//		*
//		* @return boolean
//		*/
//		public function isAlwaysKnown() {
//			$isKnown = null;
//
//			/**
//			* Allows overriding default behavior for determining if a page exists.
//			* If $isKnown is kept as null, regular checks happen. If it's
//			* a boolean, this value is returned by the isKnown method.
//			*
//			* @since 1.20
//			*
//			* @param Title $title
//			* @param boolean|null $isKnown
//			*/
//			Hooks::run('TitleIsAlwaysKnown', [ $this, &$isKnown ]);
//
//			if (!is_null($isKnown)) {
//				return $isKnown;
//			}
//
//			if ($this.isExternal()) {
//				return true;  // any interwiki link might be viewable, for all we know
//			}
//
//			switch ($this.mNamespace) {
//				case NS_MEDIA:
//				case NS_FILE:
//					// file exists, possibly in a foreign repo
//					return (boolean)wfFindFile($this);
//				case NS_SPECIAL:
//					// valid special page
//					return SpecialPageFactory::exists($this.getDBkey());
//				case NS_MAIN:
//					// selflink, possibly with fragment
//					return $this.mDbkeyform == '';
//				case NS_MEDIAWIKI:
//					// known system message
//					return $this.hasSourceText() !== false;
//				default:
//					return false;
//			}
//		}
//
//		/**
//		* Does this title refer to a page that can (or might) be meaningfully
//		* viewed?  In particular, this function may be used to determine if
//		* links to the title should be rendered as "bluelinks" (as opposed to
//		* "redlinks" to non-existent pages).
//		* Adding something else to this function will cause inconsistency
//		* since LinkHolderArray calls isAlwaysKnown() and does its own
//		* page existence check.
//		*
//		* @return boolean
//		*/
//		public function isKnown() {
//			return $this.isAlwaysKnown() || $this.exists();
//		}
//
//		/**
//		* Does this page have source text?
//		*
//		* @return boolean
//		*/
//		public function hasSourceText() {
//			if ($this.exists()) {
//				return true;
//			}
//
//			if ($this.mNamespace == NS_MEDIAWIKI) {
//				// If the page doesn't exist but is a known system message, default
//				// message content will be displayed, same for language subpages-
//				// Use always content language to avoid loading hundreds of languages
//				// to get the link color.
//				global $wgContLang;
//				list($name,) = MessageCache::singleton().figureMessage(
//					$wgContLang.lcfirst($this.getText())
//				);
//				$message = wfMessage($name).inLanguage($wgContLang).useDatabase(false);
//				return $message.exists();
//			}
//
//			return false;
//		}
//
//		/**
//		* Get the default message text or false if the message doesn't exist
//		*
//		* @return String|boolean
//		*/
//		public function getDefaultMessageText() {
//			global $wgContLang;
//
//			if ($this.getNamespace() != NS_MEDIAWIKI) { // Just in case
//				return false;
//			}
//
//			list($name, $lang) = MessageCache::singleton().figureMessage(
//				$wgContLang.lcfirst($this.getText())
//			);
//			$message = wfMessage($name).inLanguage($lang).useDatabase(false);
//
//			if ($message.exists()) {
//				return $message.plain();
//			} else {
//				return false;
//			}
//		}
//
//		/**
//		* Updates page_touched for this page; called from LinksUpdate.php
//		*
//		* @param String $purgeTime [optional] TS_MW timestamp
//		* @return boolean True if the update succeeded
//		*/
//		public function invalidateCache($purgeTime = null) {
//			if (wfReadOnly()) {
//				return false;
//			} elseif ($this.mArticleID === 0) {
//				return true; // avoid gap locking if we know it's not there
//			}
//
//			$dbw = wfGetDB(DB_MASTER);
//			$dbw.onTransactionPreCommitOrIdle(function () {
//				ResourceLoaderWikiModule::invalidateModuleCache($this, null, null, wfWikiID());
//			});
//
//			$conds = $this.pageCond();
//			DeferredUpdates::addUpdate(
//				new AutoCommitUpdate(
//					$dbw,
//					__METHOD__,
//					function (IDatabase $dbw, $fname) use ($conds, $purgeTime) {
//						$dbTimestamp = $dbw.timestamp($purgeTime ?: time());
//						$dbw.update(
//							'page',
//							[ 'page_touched' => $dbTimestamp ],
//							$conds + [ 'page_touched < ' . $dbw.addQuotes($dbTimestamp) ],
//							$fname
//						);
//						MediaWikiServices::getInstance().getLinkCache().invalidateTitle($this);
//					}
//				),
//				DeferredUpdates::PRESEND
//			);
//
//			return true;
//		}
//
//		/**
//		* Update page_touched timestamps and send CDN purge messages for
//		* pages linking to this title. May be sent to the job queue depending
//		* on the number of links. Typically called on create and delete.
//		*/
//		public function touchLinks() {
//			DeferredUpdates::addUpdate(new HTMLCacheUpdate($this, 'pagelinks'));
//			if ($this.getNamespace() == NS_CATEGORY) {
//				DeferredUpdates::addUpdate(new HTMLCacheUpdate($this, 'categorylinks'));
//			}
//		}
//
//		/**
//		* Get the last touched timestamp
//		*
//		* @param IDatabase $db Optional db
//		* @return String|false Last-touched timestamp
//		*/
//		public function getTouched($db = null) {
//			if ($db === null) {
//				$db = wfGetDB(DB_REPLICA);
//			}
//			$touched = $db.selectField('page', 'page_touched', $this.pageCond(), __METHOD__);
//			return $touched;
//		}
//
//		/**
//		* Get the timestamp when this page was updated since the user last saw it.
//		*
//		* @param User $user
//		* @return String|null
//		*/
//		public function getNotificationTimestamp($user = null) {
//			global $wgUser;
//
//			// Assume current user if none given
//			if (!$user) {
//				$user = $wgUser;
//			}
//			// Check cache first
//			$uid = $user.getId();
//			if (!$uid) {
//				return false;
//			}
//			// avoid isset here, as it'll return false for null entries
//			if (array_key_exists($uid, $this.mNotificationTimestamp)) {
//				return $this.mNotificationTimestamp[$uid];
//			}
//			// Don't cache too much!
//			if (count($this.mNotificationTimestamp) >= self::CACHE_MAX) {
//				$this.mNotificationTimestamp = [];
//			}
//
//			$store = MediaWikiServices::getInstance().getWatchedItemStore();
//			$watchedItem = $store.getWatchedItem($user, $this);
//			if ($watchedItem) {
//				$this.mNotificationTimestamp[$uid] = $watchedItem.getNotificationTimestamp();
//			} else {
//				$this.mNotificationTimestamp[$uid] = false;
//			}
//
//			return $this.mNotificationTimestamp[$uid];
//		}
//
//		/**
//		* Generate strings used for xml 'id' names in monobook tabs
//		*
//		* @param String $prepend Defaults to 'nstab-'
//		* @return String XML 'id' name
//		*/
//		public function getNamespaceKey($prepend = 'nstab-') {
//			global $wgContLang;
//			// Gets the subject namespace if this title
//			$namespace = MWNamespace::getSubject($this.getNamespace());
//			// Checks if canonical namespace name exists for namespace
//			if (MWNamespace::exists($this.getNamespace())) {
//				// Uses canonical namespace name
//				$namespaceKey = MWNamespace::getCanonicalName($namespace);
//			} else {
//				// Uses text of namespace
//				$namespaceKey = $this.getSubjectNsText();
//			}
//			// Makes namespace key lowercase
//			$namespaceKey = $wgContLang.lc($namespaceKey);
//			// Uses main
//			if ($namespaceKey == '') {
//				$namespaceKey = 'main';
//			}
//			// Changes file to image for backwards compatibility
//			if ($namespaceKey == 'file') {
//				$namespaceKey = 'image';
//			}
//			return $prepend . $namespaceKey;
//		}
//
//		/**
//		* Get all extant redirects to this Title
//		*
//		* @param int|null $ns Single namespace to consider; null to consider all namespaces
//		* @return Title[] Array of Title redirects to this title
//		*/
//		public function getRedirectsHere($ns = null) {
//			$redirs = [];
//
//			$dbr = wfGetDB(DB_REPLICA);
//			$where = [
//				'rd_namespace' => $this.getNamespace(),
//				'rd_title' => $this.getDBkey(),
//				'rd_from = page_id'
//			];
//			if ($this.isExternal()) {
//				$where['rd_interwiki'] = $this.getInterwiki();
//			} else {
//				$where[] = 'rd_interwiki = ' . $dbr.addQuotes('') . ' OR rd_interwiki IS NULL';
//			}
//			if (!is_null($ns)) {
//				$where['page_namespace'] = $ns;
//			}
//
//			$res = $dbr.select(
//				[ 'redirect', 'page' ],
//				[ 'page_namespace', 'page_title' ],
//				$where,
//				__METHOD__
//			);
//
//			foreach ($res as $row) {
//				$redirs[] = self::newFromRow($row);
//			}
//			return $redirs;
//		}
//
//		/**
//		* Check if this Title is a valid redirect target
//		*
//		* @return boolean
//		*/
//		public function isValidRedirectTarget() {
//			global $wgInvalidRedirectTargets;
//
//			if ($this.isSpecialPage()) {
//				// invalid redirect targets are stored in a global array, but explicitly disallow Userlogout here
//				if ($this.isSpecial('Userlogout')) {
//					return false;
//				}
//
//				foreach ($wgInvalidRedirectTargets as $target) {
//					if ($this.isSpecial($target)) {
//						return false;
//					}
//				}
//			}
//
//			return true;
//		}
//
//		/**
//		* Get a backlink cache Object
//		*
//		* @return BacklinkCache
//		*/
//		public function getBacklinkCache() {
//			return BacklinkCache::get($this);
//		}
//
//		/**
//		* Whether the magic words __INDEX__ and __NOINDEX__ function for  this page.
//		*
//		* @return boolean
//		*/
//		public function canUseNoindex() {
//			global $wgExemptFromUserRobotsControl;
//
//			$bannedNamespaces = is_null($wgExemptFromUserRobotsControl)
//				? MWNamespace::getContentNamespaces()
//				: $wgExemptFromUserRobotsControl;
//
//			return !in_array($this.mNamespace, $bannedNamespaces);
//		}
//
//		/**
//		* Returns the raw sort key to be used for categories, with the specified
//		* prefix.  This will be fed to Collation::getSortKey() to get a
//		* binary sortkey that can be used for actual sorting.
//		*
//		* @param String $prefix The prefix to be used, specified using
//		*   {{defaultsort:}} or like [[Category:Foo|prefix]].  Empty for no
//		*   prefix.
//		* @return String
//		*/
//		public function getCategorySortkey($prefix = '') {
//			$unprefixed = $this.getText();
//
//			// Anything that uses this hook should only depend
//			// on the Title Object passed in, and should probably
//			// tell the users to run updateCollations.php --force
//			// in order to re-sort existing category relations.
//			Hooks::run('GetDefaultSortkey', [ $this, &$unprefixed ]);
//			if ($prefix !== '') {
//				# Separate with a line feed, so the unprefixed part is only used as
//				# a tiebreaker when two pages have the exact same prefix.
//				# In UCA, tab is the only character that can sort above LF
//				# so we strip both of them from the original prefix.
//				$prefix = strtr($prefix, "\n\t", '  ');
//				return "$prefix\n$unprefixed";
//			}
//			return $unprefixed;
//		}
//
//		/**
//		* Returns the page language code saved in the database, if $wgPageLanguageUseDB is set
//		* to true in LocalSettings.php, otherwise returns false. If there is no language saved in
//		* the db, it will return NULL.
//		*
//		* @return String|null|boolean
//		*/
//		private function getDbPageLanguageCode() {
//			global $wgPageLanguageUseDB;
//
//			// check, if the page language could be saved in the database, and if so and
//			// the value is not requested already, lookup the page language using LinkCache
//			if ($wgPageLanguageUseDB && $this.mDbPageLanguage === false) {
//				$linkCache = LinkCache::singleton();
//				$linkCache.addLinkObj($this);
//				$this.mDbPageLanguage = $linkCache.getGoodLinkFieldObj($this, 'lang');
//			}
//
//			return $this.mDbPageLanguage;
//		}
//
//		/**
//		* Get the language in which the content of this page is written in
//		* wikitext. Defaults to $wgContLang, but in certain cases it can be
//		* e.g. $wgLang (such as special pages, which are in the user language).
//		*
//		* @since 1.18
//		* @return Language
//		*/
//		public function getPageLanguage() {
//			global $wgLang, $wgLanguageCode;
//			if ($this.isSpecialPage()) {
//				// special pages are in the user language
//				return $wgLang;
//			}
//
//			// Checking if DB language is set
//			$dbPageLanguage = $this.getDbPageLanguageCode();
//			if ($dbPageLanguage) {
//				return wfGetLangObj($dbPageLanguage);
//			}
//
//			if (!$this.mPageLanguage || $this.mPageLanguage[1] !== $wgLanguageCode) {
//				// Note that this may depend on user settings, so the cache should
//				// be only per-request.
//				// NOTE: ContentHandler::getPageLanguage() may need to load the
//				// content to determine the page language!
//				// Checking $wgLanguageCode hasn't changed for the benefit of unit
//				// tests.
//				$contentHandler = ContentHandler::getForTitle($this);
//				$langObj = $contentHandler.getPageLanguage($this);
//				$this.mPageLanguage = [ $langObj.getCode(), $wgLanguageCode ];
//			} else {
//				$langObj = wfGetLangObj($this.mPageLanguage[0]);
//			}
//
//			return $langObj;
//		}
//
//		/**
//		* Get the language in which the content of this page is written when
//		* viewed by user. Defaults to $wgContLang, but in certain cases it can be
//		* e.g. $wgLang (such as special pages, which are in the user language).
//		*
//		* @since 1.20
//		* @return Language
//		*/
//		public function getPageViewLanguage() {
//			global $wgLang;
//
//			if ($this.isSpecialPage()) {
//				// If the user chooses a variant, the content is actually
//				// in a language whose code is the variant code.
//				$variant = $wgLang.getPreferredVariant();
//				if ($wgLang.getCode() !== $variant) {
//					return Language::factory($variant);
//				}
//
//				return $wgLang;
//			}
//
//			// Checking if DB language is set
//			$dbPageLanguage = $this.getDbPageLanguageCode();
//			if ($dbPageLanguage) {
//				$pageLang = wfGetLangObj($dbPageLanguage);
//				$variant = $pageLang.getPreferredVariant();
//				if ($pageLang.getCode() !== $variant) {
//					$pageLang = Language::factory($variant);
//				}
//
//				return $pageLang;
//			}
//
//			// @note Can't be cached persistently, depends on user settings.
//			// @note ContentHandler::getPageViewLanguage() may need to load the
//			//   content to determine the page language!
//			$contentHandler = ContentHandler::getForTitle($this);
//			$pageLang = $contentHandler.getPageViewLanguage($this);
//			return $pageLang;
//		}
//
//		/**
//		* Get a list of rendered edit notices for this page.
//		*
//		* Array is keyed by the original message key, and values are rendered using parseAsBlock, so
//		* they will already be wrapped in paragraphs.
//		*
//		* @since 1.21
//		* @param int $oldid Revision ID that's being edited
//		* @return array
//		*/
//		public function getEditNotices($oldid = 0) {
//			$notices = [];
//
//			// Optional notice for the entire namespace
//			$editnotice_ns = 'editnotice-' . $this.getNamespace();
//			$msg = wfMessage($editnotice_ns);
//			if ($msg.exists()) {
//				$html = $msg.parseAsBlock();
//				// Edit notices may have complex logic, but output nothing (T91715)
//				if (trim($html) !== '') {
//					$notices[$editnotice_ns] = Html::rawElement(
//						'div',
//						[ 'class' => [
//							'mw-editnotice',
//							'mw-editnotice-namespace',
//							Sanitizer::escapeClass("mw-$editnotice_ns")
//						] ],
//						$html
//					);
//				}
//			}
//
//			if (MWNamespace::hasSubpages($this.getNamespace())) {
//				// Optional notice for page itself and any parent page
//				$parts = explode('/', $this.getDBkey());
//				$editnotice_base = $editnotice_ns;
//				while (count($parts) > 0) {
//					$editnotice_base .= '-' . array_shift($parts);
//					$msg = wfMessage($editnotice_base);
//					if ($msg.exists()) {
//						$html = $msg.parseAsBlock();
//						if (trim($html) !== '') {
//							$notices[$editnotice_base] = Html::rawElement(
//								'div',
//								[ 'class' => [
//									'mw-editnotice',
//									'mw-editnotice-super',
//									Sanitizer::escapeClass("mw-$editnotice_base")
//								] ],
//								$html
//							);
//						}
//					}
//				}
//			} else {
//				// Even if there are no subpages in namespace, we still don't want "/" in MediaWiki message keys
//				$editnoticeText = $editnotice_ns . '-' . strtr($this.getDBkey(), '/', '-');
//				$msg = wfMessage($editnoticeText);
//				if ($msg.exists()) {
//					$html = $msg.parseAsBlock();
//					if (trim($html) !== '') {
//						$notices[$editnoticeText] = Html::rawElement(
//							'div',
//							[ 'class' => [
//								'mw-editnotice',
//								'mw-editnotice-page',
//								Sanitizer::escapeClass("mw-$editnoticeText")
//							] ],
//							$html
//						);
//					}
//				}
//			}
//
//			Hooks::run('TitleGetEditNotices', [ $this, $oldid, &$notices ]);
//			return $notices;
//		}
//
//		/**
//		* @return array
//		*/
//		public function __sleep() {
//			return [
//				'mNamespace',
//				'mDbkeyform',
//				'mFragment',
//				'mInterwiki',
//				'mLocalInterwiki',
//				'mUserCaseDBKey',
//				'mDefaultNamespace',
//			];
//		}
//
//		public function __wakeup() {
//			$this.mArticleID = ($this.mNamespace >= 0) ? -1 : 0;
//			$this.mUrlform = wfUrlencode($this.mDbkeyform);
//			$this.mTextform = strtr($this.mDbkeyform, '_', ' ');
//		}
	private static final    byte[] Bry__wgArticlePath__wiki = Bry_.new_a7("/wiki/");
}