System.Runtime.Remoting.Channels.CrossAppDomainSink.AsyncProcessMessage C# (CSharp) Method

        public virtual IMessageCtrl AsyncProcessMessage(IMessage reqMsg, IMessageSink replySink) 
        {
            // This is the case where we take care of returning the calling
            // thread asap by using the ThreadPool for completing the call.
            
            // we use a more elaborate WorkItem and delegate the work to the thread pool
            ADAsyncWorkItem workItem = new ADAsyncWorkItem(reqMsg, 
                                        (IMessageSink)this, /* nextSink */
                                        replySink);

            WaitCallback threadFunc = new WaitCallback(workItem.FinishAsyncWork);
            ThreadPool.QueueUserWorkItem(threadFunc);
            
            return null;
        }