message: Fix bug in deserializing tensorflow_addons optimizers
diff: @@ -182,8 +182,10 @@ def model_metadata(model, include_optimizer=True, require_config=True):
  '`tf.saved_model.save`, delete the optimizer from the model.')
  else:
  optimizer_config = {
  - 'class_name': model.optimizer.__class__.__name__,
  - 'config': model.optimizer.get_config()
  + 'class_name':
  + generic_utils.get_registered_name(model.optimizer.__class__),
  + 'config':
  + model.optimizer.get_config()
  }
  metadata['training_config']['optimizer_config'] = optimizer_config
  return metadata
  