Specify the types for Element.classes, Element.elements and Node.nodes

client/dom/templates/html/interface/interface_Element.darttemplate

 // Copyright (c) 2011, 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.
 
 // WARNING: Do not edit - generated code.
 
 /**
  * Provides a Map abstraction on top of data-* attributes, similar to the
  * dataSet in the old DOM.
  */
@@ skipping 257 matching lines @@
   // its parent interface.
   String get title();
   void set title(String value);
 
   /**
    * @domName childElementCount, firstElementChild, lastElementChild,
    *   children, Node.nodes.add
    */
   ElementList get elements();
 
-  // TODO: The type of value should be Collection<Element>. See http://b/5392897
-  void set elements(value);
+  void set elements(Collection<Element> value);
 
   /** @domName className, classList */
   Set<String> get classes();
 
-  // TODO: The type of value should be Collection<String>. See http://b/5392897
-  void set classes(value);
+  void set classes(Collection<String> value);
 
   Map<String, String> get dataAttributes();
   void set dataAttributes(Map<String, String> value);
 
   /**
    * @domName getClientRects, getBoundingClientRect, clientHeight, clientWidth,
    * clientTop, clientLeft, offsetHeight, offsetWidth, offsetTop, offsetLeft,
    * scrollHeight, scrollWidth, scrollTop, scrollLeft
    */
   Future<ElementRect> get rect();
 
   /** @domName Window.getComputedStyle */
   Future<CSSStyleDeclaration> get computedStyle();
 
   /** @domName Window.getComputedStyle */
   Future<CSSStyleDeclaration> getComputedStyle(String pseudoElement);
 
   Element clone(bool deep);
 
   Element get parent();
 
 $!MEMBERS
 }