return split(getSystemProperty("aad.permission.fields", "mail"), ",")
                .get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).toArray(n -> new String[n]));
    }

    default boolean isAzureAdUseDomainServices() {
        return Constants.TRUE.equalsIgnoreCase(getSystemProperty("aad.use.ds", "true"));
    }

    default String getSsoType() {