code: def testComputeGradientsOverrideWarning(self, mock_logging):
      class SimpleOptimizer(tf.compat.v1.train.Optimizer):
          def compute_gradients(self):
              return 0
  
      dp_optimizer_vectorized.make_vectorized_optimizer_class(
          SimpleOptimizer
      )
      mock_logging.assert_called_once_with(
          "WARNING: Calling make_optimizer_class() on class %s that overrides "
          "method compute_gradients(). Check to ensure that "
          "make_optimizer_class() does not interfere with overridden version.",
          "SimpleOptimizer",
      )
  
imports: import unittest
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow import estimator
  from tensorflow.compat.v1 import estimator
  from tensorflow_privacy.privacy.optimizers import dp_optimizer_vectorized
  from tensorflow_privacy.privacy.optimizers.dp_optimizer_vectorized import VectorizedDPAdagrad
  from tensorflow_privacy.privacy.optimizers.dp_optimizer_vectorized import VectorizedDPAdam
  from tensorflow_privacy.privacy.optimizers.dp_optimizer_vectorized import VectorizedDPSGD
label_desc: Use image node_id 6 for calling the DPOptimizerTest obj's underlying member method code with example usage: obj.testComputeGradientsOverrideWarning(mock_logging) and returns: int