src/vs/workbench/browser/parts/views/viewsService.ts/ViewsService/openViewContainer
class ViewsService:	async openViewContainer(id: string, focus?: boolean): Promise<IPaneComposite | null> {
		const viewContainer = this.viewDescriptorService.getViewContainerById(id);
		if (viewContainer) {
			const viewContainerLocation = this.viewDescriptorService.getViewContainerLocation(viewContainer);
			if (viewContainerLocation !== null) {
				const paneComposite = await this.paneCompositeService.openPaneComposite(id, viewContainerLocation, focus);
				return paneComposite || null;
			}
		}

		return null;
	}