How to use the @ephox/boulder.Objects.hasKey function in @ephox/boulder

return Arr.map(items, (item) => {
      const keys = Obj.keys(item);
      // If it is a submenu, enrich all the subitems.
      if (Objects.hasKey(item, 'items')) {
        const newItems = doEnrich(item.items);
        return Merger.deepMerge(
          enrichMenu(item),
          {
            getStyleItems: () => newItems
          }
        ) as FormatItem;
      } else if (Objects.hasKey(item, 'format')) {
        return enrichSupported(item);

        // NOTE: This branch is added from the original StyleFormats in mobile
      } else if (keys.length === 1 && Arr.contains(keys, 'title')) {
        return Merger.deepMerge(item, { type: 'separator' }) as FormatItem;

      } else {
        return enrichCustom(item);

return Arr.map(items, (item) => {
      const keys = Obj.keys(item);
      // If it is a submenu, enrich all the subitems.
      if (Objects.hasKey(item, 'items')) {
        const newItems = doEnrich(item.items);
        return Merger.deepMerge(
          enrichMenu(item),
          {
            getStyleItems: () => newItems
          }
        ) as FormatItem;
      } else if (Objects.hasKey(item, 'format')) {
        return enrichSupported(item);

        // NOTE: This branch is added from the original StyleFormats in mobile
      } else if (keys.length === 1 && Arr.contains(keys, 'title')) {
        return Merger.deepMerge(item, { type: 'separator' }) as FormatItem;

      } else {
        return enrichCustom(item);
      }
    });
  };