def METHOD_NAME(self, touch, *largs):
    super(DragBehavior, self).on_touch_up(touch)
    # don't forget about grab event!
    for x in touch.grab_list[:]:
        touch.grab_list.remove(x)
        x = x()
        if not x:
            continue
        touch.grab_current = x
        super(DragBehavior, self).on_touch_up(touch)
    touch.grab_current = None