src/vs/platform/languagePacks/node/languagePacks.ts/LanguagePacksCache/createLanguagePacksFromExtensions
class LanguagePacksCache:	private createLanguagePacksFromExtensions(languagePacks: { [language: string]: ILanguagePack }, ...extensions: ILocalExtension[]): void {
		for (const extension of extensions) {
			if (extension && extension.manifest && extension.manifest.contributes && extension.manifest.contributes.localizations && extension.manifest.contributes.localizations.length) {
				this.createLanguagePacksFromExtension(languagePacks, extension);
			}
		}
		Object.keys(languagePacks).forEach(languageId => this.updateHash(languagePacks[languageId]));
	}