code: def __init__(self, async_wait: bool = False):
      self._async = async_wait
      self.name = "default_name"
      # for __call__()
      self.ready = True
      self.counter = 0
      # for check_health()
      self.health_check_ready = True
      self.health_check_counter = 0
  
file_path: ray/python/ray/serve/tests/test_config_files/pid.py
imports: import asyncio
  import os
  import time
  from ray import serve
label_desc: Use image node_id 1 to create a new f object  with example: obj = f(async_wait)