public MenuItem setTitle(CharSequence title) {
    mTitle = title;

    mMenu.onItemsChanged(false);

    if (mSubMenu != null) {
      mSubMenu.setHeaderTitle(title);
    }

    return this;
  }
  void setSubMenu(SubMenuBuilder subMenu) {
    mSubMenu = subMenu;

    subMenu.setHeaderTitle(getTitle());
  }