* </p>
     *
     * @param props
     *            プロパティセット。{@literal null}であってはいけません
     * @param in
     *            入力ストリーム。{@literal null}であってはいけません
     */
    public static void load(final Properties props, final InputStream in) {
        assertArgumentNotNull("props", props);
        assertArgumentNotNull("in", in);

        try {
            props.load(in);
        } catch (final IOException e) {

        final Properties prop = new Properties();
        lastModified = propertiesFile.lastModified();
        prop.load(inStream);
        properties = prop;
    }

    @Override
    public synchronized void load(final Reader reader) throws IOException {
        final Properties prop = new Properties();
        lastModified = propertiesFile.lastModified();
        prop.load(reader);
        properties = prop;

     */
    public static Properties getProperties(final String path) {
        assertArgumentNotEmpty("path", path);

        final Properties props = new Properties();
        final InputStream is = getResourceAsStream(path);
        try {
            props.load(is);
            return props;
        } catch (final IOException ex) {
            throw new IORuntimeException(ex);
        } finally {