src/vs/workbench/browser/parts/views/viewsService.ts/ViewsService/getVisibleViewContainer
class ViewsService:	getVisibleViewContainer(location: ViewContainerLocation): ViewContainer | null {
		let viewContainerId: string | undefined = undefined;
		switch (location) {
			case ViewContainerLocation.Panel:
				viewContainerId = this.panelService.getActivePanel()?.getId();
				break;
			case ViewContainerLocation.Sidebar:
				viewContainerId = this.viewletService.getActiveViewlet()?.getId();
				break;
		}
		return viewContainerId ? this.viewDescriptorService.getViewContainerById(viewContainerId) : null;
	}