src/vs/workbench/services/configuration/browser/configurationService.ts/WorkspaceService/updateFolders
class WorkspaceService:	public async updateFolders(foldersToAdd: IWorkspaceFolderCreationData[], foldersToRemove: URI[], index?: number): Promise<void> {
		return this.workspaceEditingQueue.queue(() => this.doUpdateFolders(foldersToAdd, foldersToRemove, index));
	}