src/vs/workbench/contrib/notebook/browser/view/notebookCellList.ts/NotebookCellList/setCellSelection
class NotebookCellList:	setCellSelection(cell: ICellViewModel, range: Range) {
		const element = cell as CellViewModel;
		if (element.editorAttached) {
			element.setSelection(range);
		} else {
			getEditorAttachedPromise(element).then(() => { element.setSelection(range); });
		}
	}