public ItemViewHolder onCreateItemViewHolder(ViewGroup parent, int itemUserType) {
        return null;
    }
Called when a ViewHolder is needed for a section item view

@param parent       The ViewGroup into which the new View will be added after it is bound to an adapter position.
@param itemUserType If getSectionItemUserType is overridden to vend custom types, this will be the specified type
@return A new ItemViewHolder holding an item view
android/modules/module_common/src/main/java/github/tornaco/android/thanos/widget/section/SectioningAdapter.java