public int getAdapterPositionForSectionItem(int sectionIndex, int offsetIntoSection) {
        if (doesSectionHaveHeader(sectionIndex)) {
            return getAdapterPosition(sectionIndex, offsetIntoSection) + 2; // header is at position 0, ghostHeader at position 1
        } else {
            return getAdapterPosition(sectionIndex, offsetIntoSection);
        }
    }
Return the adapter position corresponding to a specific item in the section

@param sectionIndex      the index of the section
@param offsetIntoSection the offset of the item in the section where 0 would be the first item in the section
@return adapter position of the item in the section
android/modules/module_common/src/main/java/github/tornaco/android/thanos/widget/section/SectioningAdapter.java