Integer getUserCodeMinLengthAsInteger();

    Integer getUserCodeMaxLengthAsInteger();

    default boolean isValidUserCode(final String userCode) {
        if (userCode == null) {
            return false;
        }

        final int length = userCode.length();
        if (getUserCodeMinLengthAsInteger().intValue() > length || getUserCodeMaxLengthAsInteger().intValue() < length) {
            return false;