anchor.diff:   */
   @NgDirective(
       selector: '[ng-class-odd]',
  -    map: const {'ng-class-odd': '@valueExpression'})
  +    map: const {'ng-class-odd': '@valueExpression'},
  +    exportExpressionAttrs: const ['ng-class-odd'])
   class NgClassOddDirective extends _NgClassBase {
     NgClassOddDirective(dom.Element element, Scope scope, NodeAttrs attrs)
         : super(element, scope, 0, attrs);
  
positive.code:  */
  @NgDirective(
      selector: '[ng-class]',
      map: const {'ng-class': '@valueExpression'})
  class NgClassDirective extends _NgClassBase {
    NgClassDirective(dom.Element element, Scope scope, NodeAttrs attrs)
        : super(element, scope, null, attrs);
  
negative.code:  */
  @NgDirective(
      selector: '[ng-class-even]',
      map: const {'ng-class-even': '@valueExpression'},
      exportExpressionAttrs: const ['ng-class-even'])
  class NgClassEvenDirective extends _NgClassBase {
    NgClassEvenDirective(dom.Element element, Scope scope, NodeAttrs attrs)
        : super(element, scope, 1, attrs);
  