class_docstr: Test optimizer used for testing BoltOn model.
class_docstr_tok: ["Test","optimizer","used","for","testing","BoltOn","model","."]
code: def _resource_apply_sparse(self, grad, handle, indices):
      return grad
  
imports: from absl.testing import parameterized
  import tensorflow.compat.v1
  from tensorflow.compat.v1.python.framework import ops
  from tensorflow.compat.v1.python.keras import keras_parameterized
  from tensorflow.compat.v1.python.keras import losses
  from tensorflow.compat.v1.python.keras.optimizer_v2.optimizer_v2 import OptimizerV2
  from tensorflow.compat.v1.python.keras.regularizers import L1L2
  from tensorflow_privacy.privacy.bolt_on import models
  from tensorflow_privacy.privacy.bolt_on.losses import StrongConvexMixin
  from tensorflow_privacy.privacy.bolt_on.optimizers import BoltOn
label_desc: Use image node_id 6 for calling the TestOptimizer obj's underlying member method code with example usage: obj._resource_apply_sparse(grad, handle, indices) and returns: grad