code: def flick_element(self, on_element, xoffset, yoffset, speed):
          
          self._actions.append(lambda: self._driver.execute(
              Command.FLICK, {
                  'element': on_element.id,
                  'xoffset': int(xoffset),
                  'yoffset': int(yoffset),
                  'speed': int(speed)}))
          return self
docs: Flick starting at on_element, and moving by the xoffset and yoffset
          with specified speed.
  
          :Args:
           - on_element: Flick will start at center of element.
           - xoffset: X offset to flick to.
           - yoffset: Y offset to flick to.
           - speed: Pixels per second to flick.