src/vs/workbench/api/common/extHostLanguages.ts/ExtHostLanguages/constructor
class ExtHostLanguages:	constructor(
		mainContext: IMainContext,
		private readonly _documents: ExtHostDocuments,
		private readonly _commands: CommandsConverter,
		private readonly _uriTransformer: IURITransformer | undefined
	) {
		this._proxy = mainContext.getProxy(MainContext.MainThreadLanguages);
	}