configuration injection

private function configureUnallocatedDataModel():void {
			injector.mapSingleton(UnallocatedJobModel);

			// a new injector context, already has it's parentInjector set
			var loInjector:IInjector = injector.createChild();

			// get the configuration for LO mapping...
			var loRule:InjectionConfig = injector.mapClass(ListObserver,ListObserver);

			// ...so that we can configure the maping to use the new child injector...
			loRule.setInjector(Injector(loInjector));

			// ...which we configure with extra mappings
			loInjector.mapClass(ProxyManager, ProxyManager);
			loInjector.mapSingletonOf(IProxyBuilder, UnallocatedProxyBuilder);

			// create the Observer.. how will we manage lifetime? Possibly context level?
			var lo:ListObserver = injector.getInstance(ListObserver);
			lo.list = UnallocatedJobModel(injector.getInstance(UnallocatedJobModel)).list;

			// and remove the child injector.
			loRule.setInjector(null);
		}