def get_config(self):
    """
    """
    config = {
        'units': self.units,
        'activation': (tf.keras.activations.serialize(self.activation)
                       if self.activation else None),
        'activity_regularizer':
            tf.keras.initializers.serialize(self.activity_regularizer),
    }
    function_keys = [
        'kernel_posterior_fn',
        'kernel_posterior_tensor_fn',
        'kernel_prior_fn',
        'kernel_divergence_fn',
        'bias_posterior_fn',
        'bias_posterior_tensor_fn',
        'bias_prior_fn',
        'bias_divergence_fn',
    ]
    for function_key in function_keys:
      function = getattr(self, function_key)
      if function is None:
        function_name = None
        function_type = None
      else:
        function_name, function_type = tfp_layers_util.serialize_function(
            function)
      config[function_key] = function_name
      config[function_key + '_type'] = function_type
    base_config = super(_DenseVariational, self).get_config()
    return dict(list(base_config.items()) + list(config.items()))