src/vs/workbench/contrib/localization/electron-sandbox/localeService.ts/NativeLocaleService/writeLocaleValue
class NativeLocaleService:	private async writeLocaleValue(locale: string | undefined): Promise<boolean> {
		if (!(await this.validateLocaleFile())) {
			return false;
		}
		await this.jsonEditingService.write(this.environmentService.argvResource, [{ path: ['locale'], value: locale }], true);
		return true;
	}