_handleF7(e) {
      const row = e.detail.row;
      row._tabbables = (0, _TabbableElements.getTabbableElements)(row);
      const activeElement = (0, _getActiveElement.default)();
      const lastFocusedElement = row._tabbables[this._prevNestedElementIndex] || row._tabbables[0];
      const targetIndex = row._tabbables.indexOf(activeElement);
      if (!row._tabbables.length) {
        return;
      }
      if (activeElement === row.root) {
        lastFocusedElement.focus();
      } else if (targetIndex > -1) {
        this._prevNestedElementIndex = targetIndex;
        row.root.focus();
      }
    }
Toggles focus between the table row's root and the last focused nested element.
@private
@param { CustomEvent } e "ui5-f7-pressed"