question: does nothing . callback function called when arriving an ack method call confirmed concode_field_sep PlaceHolder placeHolder concode_field_sep void onCallModifying concode_elem_sep void onCallTransfer concode_elem_sep void onCallAccepted concode_elem_sep void onCallClosed concode_elem_sep void onCallTransferSuccess concode_elem_sep void onCallTransferFailure concode_elem_sep void onCallClosing concode_elem_sep void onCallReInviteAccepted concode_elem_sep void onCallTransferAccepted concode_elem_sep void onCallRefused concode_elem_sep void onCallRinging concode_elem_sep void onCallReInviteRefused concode_elem_sep void onCallCanceling concode_elem_sep void onCallRedirection concode_elem_sep void onCallTransferRefused concode_elem_sep void onCallIncoming concode_elem_sep void onCallReInviteTimeout concode_elem_sep void onCallTimeout
target: void function ( Call arg0 , String arg1 , Message arg2 ) { }