code: def tap_hold(self, x, y, duration=1.0):
          
          data = {'x': x, 'y': y, 'duration': duration}
          return self.http.post('/wda/touchAndHold', data=data)
docs: Tap and hold for a moment
  
          Args:
              - x, y(int): position
              - duration(float): seconds of hold time
  
          [[FBRoute POST:@"/wda/touchAndHold"] respondWithTarget:self action:@selector(handleTouchAndHoldCoordinate:)],