code: def test_reduce_mean_mirrored_value(self):
      strategy = mwms.MultiWorkerMirroredStrategy()
  
      with strategy.scope():
          v = variables.Variable(
              constant_op.constant([[1.0, 2.0], [3.0, 4.0]])
          )
      self.assertIsInstance(v, d_variable.DVariable)
  
      result = strategy.reduce(reduce_util.ReduceOp.MEAN, v, axis=None)
      self.assertAllClose(
          result, constant_op.constant([[1.0, 2.0], [3.0, 4.0]])
      )
      result = strategy.reduce(reduce_util.ReduceOp.MEAN, v, axis=0)
      self.assertAllClose(result, constant_op.constant([2.0, 3.0]))
      result = strategy.reduce(reduce_util.ReduceOp.MEAN, v, axis=1)
      self.assertAllClose(result, constant_op.constant([1.5, 3.5]))
  
imports: import json
  import os
  from absl import flags
  from absl.testing import parameterized
  import numpy
  from tensorflow.dtensor.python import api
  from tensorflow.dtensor.python import d_variable
  from tensorflow.dtensor.python import layout
  from tensorflow.dtensor.python.tests import multi_client_test_util
  from tensorflow.dtensor.python.tests import test_backend_util
  from tensorflow.dtensor.python.tests import test_util
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.distribute import distribute_lib
  from tensorflow.python.distribute import reduce_util
  from tensorflow.python.distribute.cluster_resolver import tfconfig_cluster_resolver
  from tensorflow.python.distribute.experimental import dtensor_util
  from tensorflow.python.distribute.experimental import multi_worker_mirrored_strategy
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import config
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import stateless_random_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
label_desc: Use image node_id 24 for calling the MultiWorkerMirroredStrategyTest obj's underlying member method code with example usage: obj.test_reduce_mean_mirrored_value() without return types