public SamlCredential(final Auth auth) {
        attributes = auth.getAttributes();
        nameId = auth.getNameId();
        nameIdFormat = auth.getNameIdFormat();
        sessionIndex = auth.getSessionIndex();
        nameidNameQualifier = auth.getNameIdNameQualifier();
        nameidSPNameQualifier = auth.getNameIdSPNameQualifier();
    }

    @Override
    public String toString() {

                try {
                    final Auth auth = new Auth(getSettings(), request, response);
                    final LogoutRequestParams logoutRequestParams = new LogoutRequestParams(samlUser.getSessionIndex(), samlUser.getName(),
                            samlUser.getNameIdFormat(), samlUser.getNameidNameQualifier(), samlUser.getNameidSPNameQualifier());
                    return auth.logout(null, logoutRequestParams, true);