src/vs/workbench/contrib/notebook/browser/services/notebookServiceImpl.ts/NotebookService/canResolve
class NotebookService:	async canResolve(viewType: string): Promise<boolean> {
		if (this._notebookProviders.has(viewType)) {
			return true;
		}

		await this._extensionService.whenInstalledExtensionsRegistered();
		await this._extensionService.activateByEvent(`onNotebookSerializer:${viewType}`);

		return this._notebookProviders.has(viewType);
	}