question: gets the remote peer of the last received/sent message . concode_field_sep NameAddress remote_user concode_elem_sep MessageAgent ma concode_elem_sep Log log concode_elem_sep RegisterAgent ra concode_field_sep void onMaReceivedMessage concode_elem_sep void unregister concode_elem_sep void unregisterall concode_elem_sep void onMaDeliveryFailure concode_elem_sep void onUaRegistrationSuccess concode_elem_sep void onUaRegistrationFailure concode_elem_sep void main concode_elem_sep void send concode_elem_sep void printLog concode_elem_sep void printLog concode_elem_sep void onMaDeliverySuccess concode_elem_sep void register
target: String function ( ) { return remote_user . toString ( ) ; }