Fixed inheritance not going from Object to all other classes

pkg/docgen/lib/docgen.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * **docgen** is a tool for creating machine readable representations of Dart
  * code metadata, including: classes, members, comments and annotations.
  *
  * docgen is run on a `.dart` file or a directory containing `.dart` files.
  *
@@ skipping 386 matching lines @@
   var clazz = entityMap[mirror.qualifiedName];
   if (clazz == null) {
     var superclass = mirror.superclass != null ? 
         _class(mirror.superclass) : null;
     var interfaces = 
         mirror.superinterfaces.map((interface) => _class(interface));
     clazz = new Class(mirror.simpleName, superclass, _commentToHtml(mirror), 
         interfaces.toList(), _variables(mirror.variables),
         _methods(mirror.methods), _annotations(mirror), _generics(mirror), 
         mirror.qualifiedName, _isHidden(mirror), mirror.owner.qualifiedName);
+    if (superclass != null)
+      clazz.addInherited(superclass);
+    interfaces.forEach((interface) {
+      clazz.addInherited(interface);
+    });
     entityMap[mirror.qualifiedName] = clazz;
   }
   return clazz;
 }
 
 /**
  * Returns a map of [Class] objects constructed from [mirrorMap].
  */
 ClassGroup _classes(Map<String, ClassMirror> mirrorMap) {
   var group = new ClassGroup();
@@ skipping 276 matching lines @@
   
   void addClass(ClassMirror mirror) {
     _currentClass = mirror;
     var clazz = _class(mirror);
    
     // Adding inherited parent variables and methods. 
     clazz.parent().forEach((parent) {
       if (_isVisible(clazz)) {
         parent.addSubclass(clazz);
       }
-      clazz.addInherited(parent);
     });
 
     clazz.ensureComments();
     
     if (isError(mirror.qualifiedName)) {
       errors[mirror.simpleName] = clazz;
     } else if (mirror.isTypedef) {
       if (_includePrivate || !mirror.isPrivate) {
         entityMap[mirror.qualifiedName] = new Typedef(mirror.simpleName, 
             mirror.value.returnType.qualifiedName, _commentToHtml(mirror), 
@@ skipping 305 matching lines @@
   String qualifiedName;
   List<String> parameters; 
   
   Annotation(this.qualifiedName, this.parameters);
   
   Map toMap() => {
     'name': qualifiedName,
     'parameters': parameters
   };
 }