Make getKeys, getValues getters (keys, values).

pkg/unittest/mock.dart

 // Copyright (c) 2012, 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.
 
 /**
  * The error formatter for mocking is a bit different from the default one
  * for unit testing; instead of the third argument being a 'reason'
  * it is instead a [signature] describing the method signature filter
  * that was used to select the logs that were verified.
  */
@@ skipping 1262 matching lines @@
    * values available, and then do the action specified by that
    * return value. If we find no [Behavior] to apply an exception is
    * thrown.
    */
   noSuchMethod(String method, List args) {
     if (method.startsWith('get:')) {
       method = 'get ${method.substring(4)}';
     }
     bool matchedMethodName = false;
     MatchState matchState = new MatchState();
-    for (String k in _behaviors.getKeys()) {
+    for (String k in _behaviors.keys) {
       Behavior b = _behaviors[k];
       if (b.matcher.nameFilter.matches(method, matchState)) {
         matchedMethodName = true;
       }
       if (b.matches(method, args)) {
         List actions = b.actions;
         if (actions == null || actions.length == 0) {
           continue; // No return values left in this Behavior.
         }
         // Get the first response.
@@ skipping 156 matching lines @@
       }
     }
   }
 
   /** Clear both logs and behavior. */
   void reset() {
     resetBehavior();
     clearLogs();
   }
 }