class ViewPropertyAnimatorCompat {

    public ViewPropertyAnimatorCompat withStartAction(Runnable runnable) {
        View view;
        if ((view = mView.get()) != null) {
            if (Build.VERSION.SDK_INT >= 16) {
                view.animate().withStartAction(runnable);
            } else {
                setListenerInternal(view, new ViewPropertyAnimatorListenerApi14(this));
                mStartAction = runnable;
            }
        }
        return this;
    }

      ViewPropertyAnimatorCompat(View view);

}