src/vs/platform/localizations/node/localizations.ts/LocalizationsService/constructor
class LocalizationsService:	constructor(
		@IExtensionManagementService private readonly extensionManagementService: IExtensionManagementService,
		@INativeEnvironmentService environmentService: INativeEnvironmentService,
		@ILogService private readonly logService: ILogService
	) {
		super();
		this.cache = this._register(new LanguagePacksCache(environmentService, logService));

		this._register(extensionManagementService.onDidInstallExtension(({ local }) => this.onDidInstallExtension(local)));
		this._register(extensionManagementService.onDidUninstallExtension(({ identifier }) => this.onDidUninstallExtension(identifier)));
	}