src/vs/code/electron-browser/sharedProcess/contrib/languagePackCachedDataCleaner.ts/LanguagePackCachedDataCleaner/constructor
class LanguagePackCachedDataCleaner:	constructor(
		@INativeEnvironmentService private readonly environmentService: INativeEnvironmentService,
		@ILogService private readonly logService: ILogService,
		@IProductService private readonly productService: IProductService
	) {
		super();

		// We have no Language pack support for dev version (run from source)
		// So only cleanup when we have a build version.
		if (this.environmentService.isBuilt) {
			const scheduler = this._register(new RunOnceScheduler(() => {
				this.cleanUpLanguagePackCache();
			}, 40 * 1000 /* after 40s */));
			scheduler.schedule();
		}
	}