src/vs/workbench/contrib/notebook/browser/view/notebookCellList.ts/NotebookCellList/domElementOfElement
class NotebookCellList:	domElementOfElement(element: ICellViewModel): HTMLElement | null {
		const index = this._getViewIndexUpperBound(element);
		if (index >= 0) {
			return this.view.domElement(index);
		}

		return null;
	}