private void RebuildConfig()
{
Config = _userConfig.SafeWithFallback(_fallbackConfig);
//if we get a new config definition loaded after all ActorRefProviders have been started, such as Akka.Persistence...
if(System != null && System.Dispatchers != null)
System.Dispatchers.ReloadPrerequisites(new DefaultDispatcherPrerequisites(System.EventStream, System.Scheduler, this, System.Mailboxes));
}