src/vs/workbench/services/userDataProfile/browser/userDataProfileImportExportService.ts/UserDataProfileImportExportState/getChildren
class UserDataProfileImportExportState:	async getChildren(element?: ITreeItem): Promise<ITreeItem[] | undefined> {
		if (element) {
			return (<IProfileResourceTreeItem>element).getChildren();
		} else {
			this.rootsPromise = undefined;
			return this.getRoots();
		}
	}