code: function assertNodeType(node, type) {
      assertDefined(node, 'should be called with a node');
      assertEqual(node.tNode.type, type, "should be a " + typeName(type));
  }
docs: @license
  Copyright Google Inc. All Rights Reserved.
  
  Use of this source code is governed by an MIT-style license that can be
  found in the LICENSE file at https://angular.io/license