@Override
            protected UserGroup undecorate(UserGroup object) {
                assert(object instanceof TOTPUserGroup);
                return ((TOTPUserGroup) object).getUndecorated();
            }
Creates a new TOTPUserContext which wraps the given UserContext,
providing (or hiding) additional TOTP-specific data.

@param userContext
    The UserContext to wrap.
extensions/guacamole-auth-totp/src/main/java/org/apache/guacamole/auth/totp/user/TOTPUserContext.java