src/vs/platform/native/electron-main/nativeHostMainService.ts/NativeHostMainService/pickWorkspaceAndOpen
class NativeHostMainService:	async pickWorkspaceAndOpen(windowId: number | undefined, options: INativeOpenDialogOptions): Promise<void> {
		const paths = await this.dialogMainService.pickWorkspace(options);
		if (paths) {
			await this.doOpenPicked(paths.map(path => ({ workspaceUri: URI.file(path) })), options, windowId);
		}
	}