QPDFNumberTreeObjectHelper::getMin()
{
    if (this->m->entries.empty())
    {
        return 0;
    }
    // Our map is sorted in reverse.
    return this->m->entries.rbegin()->first;
}
QPDFNumberTreeObjectHelper::getMin()
{
    if (this->m->entries.empty())
    {
        return 0;
    }
     
    return this->m->entries.rbegin()->first;
}