public static String getClassNameFromConfig(Map<String, Object> layerConfig, KerasLayerConfiguration conf)
            throws InvalidKerasConfigurationException {
        if (!layerConfig.containsKey(conf.getLAYER_FIELD_CLASS_NAME()))
            throw new InvalidKerasConfigurationException(
                    "Field " + conf.getLAYER_FIELD_CLASS_NAME() + " missing from layer config");