code: def swipe_down(self, width: int = 1080, length: int = 1920) -> None:
          '''Swipe down.'''
          self.swipe(0.5*width, 0.2*length, 0.5*width, 0.8*lengthf swipe_down(self, width: int = 1080, length: int = 1920) -> None:
          '''Swipe down.'''
          self.swipe(0.5*width, 0.2*length, 0.5*width, 0.8*length)
docs: Swipe down.