src/vs/workbench/api/common/extHostNotebookKernels.ts/ExtHostNotebookKernels/constructor
class ExtHostNotebookKernels:	constructor(
		mainContext: IMainContext,
		private readonly _initData: IExtHostInitDataService,
		private readonly _extHostNotebook: ExtHostNotebookController,
		@ILogService private readonly _logService: ILogService,
	) {
		this._proxy = mainContext.getProxy(MainContext.MainThreadNotebookKernels);
	}