code: def _register(self):
      logger.debug("Agent._register()")
      agent = self._api.register_agent(
          socket.gethostname(), sweep_id=self._sweep_id
      )
      self._agent_id = agent["id"]
      logger.debug(f"agent_id = {self._agent_id}")
  
imports: import ctypes
  import logging
  import os
  import queue
  import socket
  import threading
  import time
  import wandb
  from wandb import wandb_sdk
  from wandb.apis import InternalApi
  from wandb.sdk.launch.sweeps import utils
label_desc: Use image node_id 3 for calling the Agent obj's underlying member method code with example usage: obj._register() without return types