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markForCheck(): void { 
  markParentViewsForCheck(this._view); 
}

export function markParentViewsForCheck(view: ViewData) {
  let currView: ViewData|null = view;
  while (currView) {
    if (currView.def.flags & ViewFlags.OnPush) {
      currView.state |= ViewState.ChecksEnabled;
    }
    currView = currView.viewContainerParent || currView.parent;
  }
}