code: def inc(self, x):
      self.i += x
      if self.fail_after and self.i > self.fail_after:
          # Randomize the failures to better cover multi actor scenarios.
          if random.random() > 0.5:
              if self.sys_exit:
                  os._exit(1)
              else:
                  raise ValueError("injected fault")
      return self.i
  
imports: import logging
  import os
  import random
  import sys
  import time
  import pytest
  import ray
  import ray.cluster_utils
  from ray.exceptions import RaySystemError
  from ray.dag import InputNode, MultiOutputNode
  from ray.tests.conftest import *
label_desc: Use image node_id 2 for calling the Actor obj's underlying member method code with example usage: obj.inc(x) and returns: self