src/vs/platform/dialogs/electron-main/dialogMainService.ts/DialogMainService/pickWorkspace
class DialogMainService:	pickWorkspace(options: INativeOpenDialogOptions, window?: BrowserWindow): Promise<string[] | undefined> {
		const title = localize('openWorkspaceTitle', "Open Workspace from File");
		const buttonLabel = mnemonicButtonLabel(localize({ key: 'openWorkspace', comment: ['&& denotes a mnemonic'] }, "&&Open"));
		const filters = WORKSPACE_FILTER;

		return this.doPick({ ...options, pickFiles: true, title, filters, buttonLabel }, window);
	}