*
     * @param cmdList the command list to add properties to
     * @param regex the regular expression pattern to match property names
     */
    protected void addFessCustomSystemProperties(final List<String> cmdList, final String regex) {
        if (StringUtil.isNotBlank(regex)) {
            final Pattern pattern = Pattern.compile(regex);
            System.getProperties()

            super.addFessSystemProperties(cmdList);
        }

        public void testAddFessCustomSystemProperties(List<String> cmdList, String regex) {
            super.addFessCustomSystemProperties(cmdList, regex);
        }

        public void testDeleteTempDir(File ownTmpDir) {
            super.deleteTempDir(ownTmpDir);
        }