code: public void getTraceSummaryLine(StringBuilder buff) {
      
      // Get the common fields for control messages
      super.getTraceSummaryLine(buff);
      
      buff.append(",requestID=");
      buff.append(getRequestID());
      
      buff.append(",durableSubName=");
      buff.append(getDurableSubName());
      
      buff.append(",securityUserid=");
      buff.append(getSecurityUserid());
          
    }
docs: /*
  Get summary trace line for this message
  
  Javadoc description supplied by ControlMessage interface.