anchor.diff:    var emit = false;
   
     ScopeStatsConfig();
  -  ScopeStatsConfig.enabled() {
  -    emit = true;
  -  }
  +  ScopeStatsConfig.enabled(): emit = true;
   }
   /**
  - *
    * Every Angular application has exactly one RootScope. RootScope extends Scope, adding
    * services related to change detection, async unit-of-work processing, and DOM read/write queues.
    * The RootScope can not be destroyed.
  
positive.code:     return child;
    }
  
    void destroy() {
      assert(isAttached);
      broadcast(ScopeEvent.DESTROY);
  
negative.code:     return true;
    }
  
    /// true when the scope is still attached to the [RootScope].
    bool get isAttached => !isDestroyed;
  
    // TODO(misko): WatchGroup should be private.
  