code: def setUp(self, num_workers, num_ps):
      super().setUp()
  
      self._cluster = (
          multi_worker_test_base.create_multi_process_cluster(
              num_workers=num_workers, num_ps=num_ps, rpc_layer="grpc"
          )
      )
      self._cluster_def = (
          self._cluster.cluster_resolver.cluster_spec().as_dict()
      )
      self._cluster_def["chief"] = [
          "localhost:%d" % multi_worker_test_base.pick_unused_port()
      ]
      cluster_resolver = cluster_resolver_lib.SimpleClusterResolver(
          server_lib.ClusterSpec(self._cluster_def), rpc_layer="grpc"
      )
  
      context.context().configure_coordination_service(
          service_type="standalone",
          service_leader="/job:ps/replica:0/task:0",
          heartbeat_timeout_in_ms=_PULL_FREQ_IN_SEC * 1000,
          allow_new_incarnation_to_reconnect=True,
      )
      self.strategy = (
          parameter_server_strategy_v2.ParameterServerStrategyV2(
              cluster_resolver
          )
      )
      self.cluster_coord = cluster_coordinator.ClusterCoordinator(
          self.strategy
      )
  
      self.num_workers = num_workers
      self.num_ps = num_ps
  
      self.states = None
      self.polling_thread = utils.RepeatedTimer(
          interval=_PULL_FREQ_IN_SEC, function=self.get_task_states
      )
  
imports: import time
  from tensorflow.core.lib.core import error_codes_pb2
  from tensorflow.python.compat import v2_compat
  from tensorflow.python.distribute import multi_process_runner
  from tensorflow.python.distribute import multi_worker_test_base
  from tensorflow.python.distribute import parameter_server_strategy_v2
  from tensorflow.python.distribute.cluster_resolver import cluster_resolver
  from tensorflow.python.distribute.coordinator import cluster_coordinator
  from tensorflow.python.distribute.coordinator import utils
  from tensorflow.python.eager import context
  from tensorflow.python.eager import test
  from tensorflow.python.framework import errors
  from tensorflow.python.training import server_lib
label_desc: Use image node_id 1 for calling the GetTaskStatesTest obj's underlying member method code with example usage: obj.setUp(num_workers, num_ps) without return types