Return hyperparameters used by your custom TensorFlow code during model training.

def hyperparameters(self):
        """Return hyperparameters used by your custom TensorFlow code during model training."""
        hyperparameters = super(RLEstimator, self).hyperparameters()

        additional_hyperparameters = {SAGEMAKER_OUTPUT_LOCATION: self.output_path,
                                      # TODO: can be applied to all other estimators
                                      SAGEMAKER_ESTIMATOR: SAGEMAKER_ESTIMATOR_VALUE}

        hyperparameters.update(Framework._json_encode_hyperparameters(additional_hyperparameters))
        return hyperparameters