callbackInsideFunction.kt

companion object {
        var callbackLoadMore: ((Int) -> Unit)? = null
        var callbackLikeClick: ((Promotion) -> Unit)? = null
        fun forPage(callbackLoadMore: (Int) -> Unit, callbackLikeClick: (Promotion) -> Unit): ShowcasePageOneFragment {
            this.callbackLoadMore = callbackLoadMore
            this.callbackLikeClick = callbackLikeClick
            return ShowcasePageOneFragment()
        }
    }