class_docstr: The hearbeat service definition.
      
docstr: Missing associated documentation comment in .proto file.
code: def Send(self, request, context):
      """Missing associated documentation comment in .proto file."""
      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
      context.set_details("Method not implemented!")
      raise NotImplementedError("Method not implemented!")
  
file_path: PARL/parl/remote/grpc_heartbeat/heartbeat_pb2_grpc.py
imports: import grpc
  from parl.remote.grpc_heartbeat import heartbeat_pb2
label_desc: Use image node_id 1 for calling the GrpcHeartbeatServicer obj's underlying member method code with example usage: obj.Send(request, context) without return types