code: def testProtoDictDefEquivalencesWithStringTaskIndex(self):
      cluster_spec = server_lib.ClusterSpec(
          {
              "ps": ["ps0:2222", "ps1:2222"],
              "worker": {"1": "worker1:2222"},
          }
      )
  
      expected_proto = """
      job { name: 'ps' tasks { key: 0 value: 'ps0:2222' }
                       tasks { key: 1 value: 'ps1:2222' } }
      job { name: 'worker' tasks { key: 1 value: 'worker1:2222' } }
      """
  
      self.assertProtoEquals(
          expected_proto, cluster_spec.as_cluster_def()
      )
      self.assertProtoEquals(
          expected_proto,
          server_lib.ClusterSpec(cluster_spec).as_cluster_def(),
      )
      self.assertProtoEquals(
          expected_proto,
          server_lib.ClusterSpec(
              cluster_spec.as_cluster_def()
          ).as_cluster_def(),
      )
      self.assertProtoEquals(
          expected_proto,
          server_lib.ClusterSpec(
              cluster_spec.as_dict()
          ).as_cluster_def(),
      )
  
imports: import time
  import numpy
  from tensorflow.core.protobuf import cluster_pb2
  from tensorflow.core.protobuf import config_pb2
  from tensorflow.core.protobuf import tensorflow_server_pb2
  from tensorflow.python.client import session
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import data_flow_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variable_v1
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
  from tensorflow.python.training import input
  from tensorflow.python.training import queue_runner_impl
  from tensorflow.python.training import server_lib
  from tsl.protobuf import rpc_options_pb2
label_desc: Use image node_id 3 for calling the ClusterSpecTest obj's underlying member method code with example usage: obj.testProtoDictDefEquivalencesWithStringTaskIndex() without return types