src/vs/workbench/browser/parts/views/viewsService.ts/ViewsService/onDidRegisterViewContainer
class ViewsService:	private onDidRegisterViewContainer(viewContainer: ViewContainer, viewContainerLocation: ViewContainerLocation): void {
		this.registerViewletOrPanel(viewContainer, viewContainerLocation);
		const viewContainerModel = this.viewDescriptorService.getViewContainerModel(viewContainer);
		this.onViewDescriptorsAdded(viewContainerModel.allViewDescriptors, viewContainer);
		this._register(viewContainerModel.onDidChangeAllViewDescriptors(({ added, removed }) => {
			this.onViewDescriptorsAdded(added, viewContainer);
			this.onViewDescriptorsRemoved(removed);
		}));
		this._register(this.registerOpenViewContainerAction(viewContainer));
	}