code: @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
  	@Override
  	int calculateEndTopBound(float yAxisDelta) {
  		return (int) (getView().getY() + yAxisDelta);
  	}
docs: Calculates the resulting Y coordinate of the view's top bound based on the
  Y position of the view and the Y-axis delta
  
  @param yAxisDelta Y-axis delta in actual pixels
  @return resulting Y coordinate of the view's top bound