src/vs/workbench/contrib/notebook/browser/view/cellParts/markupCell.ts/MarkupCell/updateForFocusModeChange
class MarkupCell:	private updateForFocusModeChange() {
		if (this.viewCell.focusMode === CellFocusMode.Editor) {
			this.focusEditorIfNeeded();
		}

		this.templateData.container.classList.toggle('cell-editor-focus', this.viewCell.focusMode === CellFocusMode.Editor);
	}