if (StringUtil.isBlank(value)) {
            value = getSystemProperty("aad.use.ds", "true");
        }
        return Constants.TRUE.equalsIgnoreCase(value);
    }

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

    //
    // fess_*.properties
    //

    String getAuthenticationAdminRoles();