src/vs/workbench/contrib/notebook/browser/diff/notebookTextDiffList.ts/NotebookTextDiffList/updateElementHeight2
class NotebookTextDiffList:	updateElementHeight2(element: DiffElementViewModelBase, size: number) {
		const viewIndex = this.indexOf(element);
		const focused = this.getFocus();

		this.view.updateElementHeight(viewIndex, size, focused.length ? focused[0] : null);
	}