code: def move_by_offset(self, xoffset, yoffset):
          
          if self._driver.w3c:
              self.w3c_actions.pointer_action.move_by(xoffset, yoffset)
              self.w3c_actions.key_action.pause()
          else:
              self._actions.append(lambda: self._driver.execute(
                  Command.MOVE_TO, {
                      'xoffset': int(xoffset),
                      'yoffset': int(yoffset)}))
          return self
docs: Moving the mouse to an offset from current mouse position.
  
          :Args:
           - xoffset: X offset to move to, as a positive or negative integer.
           - yoffset: Y offset to move to, as a positive or negative integer.