src/vs/workbench/api/browser/viewsExtensionPoint.ts/ViewsExtensionHandler/constructor
class ViewsExtensionHandler:	constructor(
		@IInstantiationService private readonly instantiationService: IInstantiationService
	) {
		this.viewContainersRegistry = Registry.as<IViewContainersRegistry>(ViewContainerExtensions.ViewContainersRegistry);
		this.viewsRegistry = Registry.as<IViewsRegistry>(ViewContainerExtensions.ViewsRegistry);
		this.handleAndRegisterCustomViewContainers();
		this.handleAndRegisterCustomViews();
	}