code: def testMirrored(self, strategy):
      self.assertIsInstance(
          strategy, mirrored_strategy.MirroredStrategyV1
      )
  
imports: from absl.testing import parameterized
  from tensorflow.python import tf2
  from tensorflow.python.distribute import central_storage_strategy
  from tensorflow.python.distribute import collective_all_reduce_strategy
  from tensorflow.python.distribute import combinations
  from tensorflow.python.distribute import mirrored_strategy
  from tensorflow.python.distribute import one_device_strategy
  from tensorflow.python.distribute import parameter_server_strategy_v2
  from tensorflow.python.distribute import reduce_util
  from tensorflow.python.distribute import strategy_combinations
  from tensorflow.python.distribute import test_util
  from tensorflow.python.distribute import tpu_strategy
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 3 for calling the V1StrategyTest obj's underlying member method code with example usage: obj.testMirrored(strategy) without return types