src/vs/workbench/contrib/notebook/common/services/notebookWorkerServiceImpl.ts/NotebookEditorWorkerServiceImpl/computeDiff
class NotebookEditorWorkerServiceImpl:	computeDiff(original: URI, modified: URI): Promise<INotebookDiffResult> {
		return this._workerManager.withWorker().then(client => {
			return client.computeDiff(original, modified);
		});
	}