Akka.Actor.ActorCell.SystemInvoke C# (CSharp) Method

        public void SystemInvoke(Envelope envelope)
        {

            try
            {
                var m = envelope.Message;

                if (m is ActorTaskSchedulerMessage) HandleActorTaskSchedulerMessage(m as ActorTaskSchedulerMessage);
                else if (m is Failed) HandleFailed(m as Failed);
                else if (m is DeathWatchNotification)
                {
                    var msg = m as DeathWatchNotification;
                    WatchedActorTerminated(msg.Actor, msg.ExistenceConfirmed, msg.AddressTerminated);
                }
                else if (m is Create) HandleCreate((m as Create).Failure);
                else if (m is Watch)
                {
                    var watch = m as Watch;
                    AddWatcher(watch.Watchee, watch.Watcher);
                }
                else if (m is Unwatch)
                {
                    var unwatch = m as Unwatch;
                    RemWatcher(unwatch.Watchee, unwatch.Watcher);
                }
                else if (m is Recreate) FaultRecreate((m as Recreate).Cause);
                else if (m is Suspend) FaultSuspend();
                else if (m is Resume) FaultResume((m as Resume).CausedByFailure);
                else if (m is Terminate) Terminate();
                else if (m is Supervise)
                {
                    var supervise = m as Supervise;
                    Supervise(supervise.Child, supervise.Async);
                }
                else
                {
                    throw new NotSupportedException("Unknown message " + m.GetType().Name);
                }
            }
            catch (Exception cause)
            {
                HandleInvokeFailure(cause);
            }
        }

 /// <summary>
 /// Dispatches a <see cref="ISystemMessage"/> from a mailbox to an <see cref="ActorCell"/>        
 /// </summary>
 public virtual void SystemDispatch(ActorCell cell, Envelope envelope)
 {
     cell.SystemInvoke(envelope);
 }