public BottomNavigationItem setBadgeItem(@Nullable BadgeItem badgeItem) {
        this.mBadgeItem = badgeItem;
        return this;
    }
@param badgeItem badge that needs to be displayed for this tab
@return this, to allow builder pattern
common/src/main/java/com/sxjs/common/widget/bottomnavigation/BottomNavigationItem.java