question: register with the registrar server . concode_field_sep PresenceAgent pa concode_elem_sep PrintStream stdout concode_elem_sep BufferedReader stdin concode_elem_sep Log log concode_elem_sep RegisterAgent ra concode_field_sep void onPaNotificationFailure concode_elem_sep void subscribe concode_elem_sep void unregister concode_elem_sep void unregisterall concode_elem_sep void onUaRegistrationSuccess concode_elem_sep void main concode_elem_sep void onPaSubscriptionSuccess concode_elem_sep String readLine concode_elem_sep void printLog concode_elem_sep void printLog concode_elem_sep void onPaSubscriptionTerminated concode_elem_sep void unsubscribe concode_elem_sep void onPaSubscriptionRequest concode_elem_sep void onPaNotificationRequest concode_elem_sep void onUaRegistrationFailure concode_elem_sep void printOut
target: void function ( int arg0 ) { ra . register ( arg0 ) ; }