/** The key of the configuration. e.g. mail */
    String LDAP_ATTR_MAIL = "ldap.attr.mail";

    /** The key of the configuration. e.g. telephoneNumber */
    String LDAP_ATTR_TELEPHONE_NUMBER = "ldap.attr.telephoneNumber";

    /** The key of the configuration. e.g. homePhone */
    String LDAP_ATTR_HOME_PHONE = "ldap.attr.homePhone";