}
        return toWords(string, '_').toUpperCase(Locale.ROOT);
    }

    /**
     * Converts an arbitrary string to space-separated words. Eg, camelCase -> camel case, with_underscores -> with underscores
     */
    public static String toWords(CharSequence string) {
        return toWords(string, ' ');
    }

    public static String toWords(CharSequence string, char separator) {

        if (string == null) {
            return null;
        }
        return toWords(string, '_').toUpperCase();
    }

    /**
     * Converts an arbitrary string to space-separated words. Eg, camelCase -> camel case, with_underscores -> with underscores
     */
    public static String toWords(CharSequence string) {
        return toWords(string, ' ');
    }

    @SuppressWarnings("StringCaseLocaleUsage")

        T match = findEnumValue(enumType, literal);
        if (match != null) {
            return match;
        }

        final String alternativeLiteral = toWords(literal, '_');
        match = findEnumValue(enumType, alternativeLiteral);
        if (match != null) {
            return match;
        }

        String sep = "";