src/vs/workbench/browser/parts/views/viewsService.ts/ViewsService/deregisterPaneComposite
class ViewsService:	private deregisterPaneComposite(viewContainer: ViewContainer, viewContainerLocation: ViewContainerLocation): void {
		Registry.as<PaneCompositeRegistry>(getPaneCompositeExtension(viewContainerLocation)).deregisterPaneComposite(viewContainer.id);
	}