code: def start(self):
      self.device.start()
      logger.debug(
          "started device in:%s out:%s", self.in_addr, self.out_addr
      )
  
imports: import random
  import logging
  import multiprocessing
  import threading
  from fiber.backend import get_backend
label_desc: Use image node_id 2 for calling the ProcessDevice obj's underlying member method code with example usage: obj.start() without return types