docs: public synchronized void unsetHandler(Handler handler) {
          String handlerId = CollectorManagerUtils.getHandlerId(handler);
          HandlerManager hdlrMgr;
          if (handlerMgrs.containsKey(handlerId)) {
              if (TraceComponent.isAnyTracingEnabled() && tc.isEventEnabled()) {
                  Tr.event(tc, "Removing handler from the list", handler.getClass());
              }
              hdlrMgr = handlerMgrs.get(handlerId);
              //Terminate all subscriptions
              try {
                  unsubscribe(handler, new ArrayList<String>(hdlrMgr.getSubsribedSources()));
              } catch (Exception e) {
  
              }
              hdlrMgr.unsetHandler(handler);
              handlerMgrs.remove(handlerId);
          }
      }