src/vs/workbench/services/views/browser/viewDescriptorService.ts/ViewDescriptorService/moveViewsToContainer
class ViewDescriptorService:	moveViewsToContainer(views: IViewDescriptor[], viewContainer: ViewContainer, visibilityState?: ViewVisibilityState): void {
		if (!views.length) {
			return;
		}

		const from = this.getViewContainerByViewId(views[0].id);
		const to = viewContainer;

		if (from && to && from !== to) {
			this.moveViews(views, from, to, visibilityState);
			this.cleanUpViewContainer(from.id);
		}
	}