src/vs/workbench/browser/parts/views/viewsService.ts/ViewsService/getComposite
class ViewsService:	private getComposite(compositeId: string, location: ViewContainerLocation): { id: string, name: string } | undefined {
		if (location === ViewContainerLocation.Sidebar) {
			return this.viewletService.getViewlet(compositeId);
		} else if (location === ViewContainerLocation.Panel) {
			return this.panelService.getPanel(compositeId);
		}

		return undefined;
	}