code: def increment(self):
      self.n += 1
      return self.n
  
imports: from __future__ import annotations
  import asyncio
  import operator
  from time import sleep
  import pytest
  import dask
  from distributed import Actor, BaseActorFuture, Client, Future, Nanny, as_completed, get_client, wait, worker_client
  from distributed.metrics import time
  from distributed.utils import LateLoopEvent
  from distributed.utils_test import cluster, double, gen_cluster, inc
  from distributed.worker import get_worker
label_desc: Use image node_id 2 for calling the Counter obj's underlying member method code with example usage: obj.increment() and returns: self