<s>[INST] called to start the traffic analysis . messages that are sent prior to invoking this method are not taken into account for analysis . calling this method starts a fresh measurement . the number of the participating hosts has to be set before calling this method . concode_field_sep Logger log concode_elem_sep double numHosts concode_elem_sep boolean started concode_elem_sep Map<Long,Long> sentMaintenance concode_elem_sep Map<Long,Long> sentUser concode_field_sep void writeTraffic concode_elem_sep void stop concode_elem_sep void setNumberOfHosts concode_elem_sep void transMsgSent concode_elem_sep void messageSent concode_elem_sep void transMsgReceived [/INST] void function ( ) { if ( ! started ) { started = true ; sentMaintenance = new HashMap < Long , Long > ( ) ; sentUser = new HashMap < Long , Long > ( ) ; } </s>