Returns the distingusihed name of the object your are logged in as. To use this class, you must create an instance of the class and then call the extendedOperation method with this object as the required LdapExtendedOperation parameter. The returned LdapExtendedResponse object can then be converted to a GetBindDNResponse object with the ExtendedREsponseFactory class. This object contains methods for retrieving the distinguished name. The GetBindDNRequest extension uses the following OID: 2.16.840.1.113719.1.27.100.31 The request value has a value of null.