code: def _write_remote_actor_to_file(self, file_path):
      with open(file_path, "w") as f:
          f.write(
              """\
  import parl
  
  @parl.remote_class
  class Actor(object):
      def __init__(self):
          pass
      
      def add_one(self, x):
          return x + 1
  """
          )
  
file_path: PARL/parl/remote/tests/locate_remote_file_test_alone.py
imports: import shutil
  import unittest
  import parl
  import os
  import sys
  import time
  import threading
  import queue
  from parl.utils.test_utils import XparlTestCase
  from parl.remote import exceptions
  from parl.utils import logger, get_free_tcp_port
label_desc: Use image node_id 1 for calling the TestCluster obj's underlying member method code with example usage: obj._write_remote_actor_to_file(file_path) without return types