Add TreeModel and HasSubtree implementation

src/di/factory/AbstractFactory.ts

@@ -51,6 +51,6 @@ export abstract class AbstractFactory<T> {
             return this.token
         }
 
-        return this.token.name ?? '(unknown token)'
+        return this.token?.name ?? '(unknown token)'
     }
 }

src/di/factory/Factory.ts

@@ -6,7 +6,7 @@ import {
     Instantiable,
     PropertyDependency,
 } from '../types'
-import {Collection} from '../../util'
+import {Collection, logIfDebugging} from '../../util'
 import 'reflect-metadata'
 
 /**
@@ -58,6 +58,7 @@ export class Factory<T> extends AbstractFactory<T> {
 
         do {
             const loadedMeta = Reflect.getMetadata(DEPENDENCY_KEYS_PROPERTY_METADATA_KEY, currentToken)
+            logIfDebugging('extollo.di.injection', 'Factory.getInjectedProperties() target:', currentToken, 'loaded:', loadedMeta)
             if ( loadedMeta ) {
                 meta.concat(loadedMeta)
             }