src/vs/workbench/services/dialogs/electron-sandbox/fileDialogService.ts/FileDialogService/pickFolderAndOpen
class FileDialogService:	async pickFolderAndOpen(options: IPickAndOpenOptions): Promise<void> {
		const schema = this.getFileSystemSchema(options);

		if (!options.defaultUri) {
			options.defaultUri = await this.defaultFolderPath(schema);
		}

		if (this.shouldUseSimplified(schema).useSimplified) {
			return this.pickFolderAndOpenSimplified(schema, options);
		}
		return this.nativeHostService.pickFolderAndOpen(this.toNativeOpenDialogOptions(options));
	}