src/vs/workbench/contrib/notebook/browser/viewModel/baseCellViewModel.ts/BaseCellViewModel/getCellDecorationRange
class BaseCellViewModel:	getCellDecorationRange(decorationId: string): Range | null {
		if (this._textEditor) {
			// (this._textEditor as CodeEditorWidget).decora
			return this._textEditor.getModel()?.getDecorationRange(decorationId) ?? null;
		}

		return null;
	}