src/vs/workbench/contrib/notebook/browser/notebookServiceImpl.ts/NotebookService/getEditorTypes
class NotebookService:	getEditorTypes(): IEditorType[] {
		return [...this._notebookProviderInfoStore].map(info => ({
			id: info.id,
			displayName: info.displayName,
			providerDisplayName: info.providerDisplayName
		}));
	}