src/vs/workbench/contrib/notebook/common/notebookEditorInput.ts/NotebookEditorInput/getDescription
class NotebookEditorInput:	override getDescription(verbosity = Verbosity.MEDIUM): string | undefined {
		if (!this.hasCapability(EditorInputCapabilities.Untitled) || this._editorModelReference?.object.hasAssociatedFilePath()) {
			return super.getDescription(verbosity);
		}

		return undefined; // no description for untitled notebooks without associated file path
	}