code: def test_mirrored_strategy(self, mock_mirrored_strategy):
      mirrored_strategy = mock.MagicMock()
      mock_mirrored_strategy.return_value = mirrored_strategy
  
      strategy = strategy_utils.get_strategy(False, use_gpu=True)
      self.assertIs(strategy, mirrored_strategy)
  
file_path: agents/tf_agents/train/utils/strategy_utils_test.py
imports: from absl.testing.absltest import mock
  import tensorflow.compat.v2
  from tf_agents.train.utils import strategy_utils
  from tf_agents.utils import test_utils
label_desc: Use image node_id 3 for calling the StrategyUtilsTest obj's underlying member method code with example usage: obj.test_mirrored_strategy(mock_mirrored_strategy) without return types