code: public static ExecutorService getExecutorService() {
          HttpDispatcher f = instance.get().get();
          if (f == null) {
              if (TraceComponent.isAnyTracingEnabled() && tc.isEventEnabled()) {
                  Tr.event(tc, "HttpDispatcher instance not found");
              }
              return null;
          } else {
              if (TraceComponent.isAnyTracingEnabled() && tc.isEventEnabled()) {
                  Tr.event(tc, "HttpDispatcher instance: " + f.toString());
              }
              return f.executorService;
          }
  
      }
docs: Access the collaboration engine.
  
  @return CollaborationEngine - null if not found