public static final String ERRORS_password_length = "{errors.password_length}";

    /** The key of the message: Password must contain at least one uppercase letter. */
    public static final String ERRORS_password_no_uppercase = "{errors.password_no_uppercase}";

    /** The key of the message: Password must contain at least one lowercase letter. */

            <ul>
            <li>{@code length(string)}: Returns the length of the given string.</li>
            <li>{@code upper(string)}: Converts the string to uppercase.</li>
            <li>{@code lower(string)}: Converts the string to lowercase.</li>
            <li>{@code substring(string, start, [end])}: Returns a substring of the given string.</li>