class_docstr: The hearbeat service definition.
      
docstr: Constructor.
  
  Args:
      channel: A grpc.Channel.
code: def __init__(self, channel):
      """Constructor.
  
      Args:
          channel: A grpc.Channel.
      """
      self.Send = channel.unary_unary(
          "/GrpcHeartbeat/Send",
          request_serializer=heartbeat__pb2.Request.SerializeToString,
          response_deserializer=heartbeat__pb2.Reply.FromString,
      )
  
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 to create a new GrpcHeartbeatStub object from inherited base classes: object with example: obj = GrpcHeartbeatStub(channel)