    void TiffDecoder::getObjData(byte const*& pData,
                                 long& size,
                                 uint16_t tag,
                                 IfdId group,
                                 const TiffEntryBase* object)
    {
        if (object && object->tag() == tag && object->group() == group) {
            pData = object->pData();
            size = object->size();
            return;
        }
        TiffFinder finder(tag, group);
        pRoot_->accept(finder);
        TiffEntryBase const* te = dynamic_cast<TiffEntryBase*>(finder.result());
        if (te) {
            pData = te->pData();
            size = te->size();
            return;
        }
    }
Unknown