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

    default String getSsoType() {
        return getSystemProperty(Constants.SSO_TYPE_PROPERTY, Constants.NONE);
    }

    //
    // fess_*.properties
    //

    String getAuthenticationAdminRoles();

    default String[] getAuthenticationAdminRolesAsArray() {

          "fenh--nx??r-datsgrt--nx?s-ladrjts--nx?v-y&senner--nx?vrejks--nx???3g-datsobegh--nx?4&5-&dnaleprj--nx?goksnerl--nx?tednalyh--nx??6-neladnjm--nx?s-&antouvachb--nx?impouvtalm--nx??y-&agrjnevvad--nx?ikhvlaraeb--nx???7k-antouvacchb--nx?...

2D97..2D9F    ; disallowed                             # NA   <reserved-2D97>..<reserved-2D9F>
2DA0..2DA6    ; valid                                  # 4.1  ETHIOPIC SYLLABLE SSA..ETHIOPIC SYLLABLE SSO
2DA7          ; disallowed                             # NA   <reserved-2DA7>
2DA8..2DAE    ; valid                                  # 4.1  ETHIOPIC SYLLABLE CCA..ETHIOPIC SYLLABLE CCO