public static int unmaskUserViewType(int itemViewTypeMask) {
        return (itemViewTypeMask >> 8) & 0xFF; // use type is in 0x0000FF00 segment
    }
@param adapterPosition the adapterPosition of the item in question
@return the custom user type of the item at the adapterPosition
android/modules/module_common/src/main/java/github/tornaco/android/thanos/widget/section/SectioningAdapter.java