void HackToCreateStubInMTA(object param)
        {
            SinkForEventQuery     obj      = (SinkForEventQuery)param;
            IWmiSinkDemultiplexor sinkDmux = (IWmiSinkDemultiplexor) new WmiSinkDemultiplexor();
            object dmuxStub = null;

            sinkDmux.GetDemultiplexedStub(obj, out dmuxStub);
            obj.stub = (IWbemObjectSink)dmuxStub;
        }
        private IWbemObjectSink stub;                           // The secured IWbemObjectSink

        public SinkForEventQuery(ManagementEventWatcher eventWatcher,
                                 object context,
                                 IWbemServices services)
        {
            this.services     = services;
            this.context      = context;
            this.eventWatcher = eventWatcher;

            IWmiSinkDemultiplexor sinkDmux = (IWmiSinkDemultiplexor) new WmiSinkDemultiplexor();
            object dmuxStub = null;

            sinkDmux.GetDemultiplexedStub(this, out dmuxStub);
            stub = (IWbemObjectSink)dmuxStub;
        }