private static String getFilename(String key, String modelName) {
public static String getFilename(String key, String modelName) {
    private static String getFilename(String key, String modelName) {        String filename = modelName + "_" + key;        if (MODEL.equals(key)) {            return filename += ".xml";        } else if (KEY_DEFINITIONS.equals(key) || CLASS_DESCRIPTIONS.equals(key)) {            return filename += ".properties";        }        throw new IllegalArgumentException("Unrecognised key '" + key + "'");    }