public static double getBiasL1RegularizationFromConfig(Map<String, Object> layerConfig,
                                                           boolean enforceTrainingConfig,
                                                           KerasLayerConfiguration conf)
            throws UnsupportedKerasConfigurationException, InvalidKerasConfigurationException {
        Map<String, Object> innerConfig = KerasLayerUtils.getInnerLayerConfigFromConfig(layerConfig, conf);