code: def save(self, kpt, bbox):
      self.kpts.append(kpt)
      self.bboxes.append(bbox)
      self.frames += 1
      if self.frames == self.max_size:
          return True
      return False
  
file_path: PaddleDetection/deploy/pipeline/pphuman/action_utils.py
label_desc: Use image node_id 2 for calling the KeyPointSequence obj's underlying member method code with example usage: obj.save(kpt, bbox) and returns: False, True