getItemViewType.java

class ConcatAdapterController implements NestedAdapterWrapper.Callback {

    ..
    public int getItemViewType(int globalPosition) {
        WrapperAndLocalPosition wrapperAndPos = findWrapperAndLocalPosition(globalPosition);
        int itemViewType = wrapperAndPos.mWrapper.getItemViewType(wrapperAndPos.mLocalPosition);
        releaseWrapperAndLocalPosition(wrapperAndPos);
        return itemViewType;
    }
    ..

}