code: def get_pipeline_response(self, read_op):
      arcface_op = ArcFaceOp(name="ArcFace", input_ops=[read_op])
      return arcface_op
  
file_path: insightface/recognition/arcface_paddle/deploy/pdserving/web_service.py
imports: from paddle_serving_server.web_service import WebService, Op
  import numpy
  import cv2
  import base64
label_desc: Use image node_id 1 for calling the ArcFaceService obj's underlying member method code with example usage: obj.get_pipeline_response(read_op) and returns: arcface_op