buf.append(',').append(getLdapAdminGroupBaseDn());
        }
        return buf.toString();
    }

    String getAuthenticationAdminUsers();

    default boolean isAdminUser(final String username) {
        return split(getAuthenticationAdminUsers(), ",").get(stream -> stream.anyMatch(s -> s.equals(username)));
    }

    boolean isLdapAdminEnabled();

     * The value is, e.g. admin <br>
     * comment: Admin user names for authentication.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getAuthenticationAdminUsers();

    /**
     * Get the value for the key 'authentication.admin.roles'. <br>
     * The value is, e.g. admin <br>
     * comment: Admin role names for authentication.