}
        start += 3;

        final int end = entryDn.indexOf(',', start);
        final String value = end == -1 ? entryDn.substring(start) : entryDn.substring(start, end);
        if (fessConfig.isLdapGroupNameWithUnderscores()) {
            return replaceWithUnderscores(value);
        }
        return value;
    }

    /**
     * Replaces special characters in a string with underscores for group names.
     *

     * comment: Whether to allow underscores in LDAP group names.
     * @return The determination, true or false. (if not found, exception but basically no way)
     */
    boolean isLdapGroupNameWithUnderscores();

    /**
     * Get the value for the key 'ldap.lowercase.permission.name'. <br>
     * The value is, e.g. false <br>
     * comment: Whether to use lowercase for LDAP permission names.