    void TiffSubIfd::doAccept(TiffVisitor& visitor)
    {
        visitor.visitSubIfd(this);
        for (Ifds::iterator i = ifds_.begin();
             visitor.go(TiffVisitor::geTraverse) && i != ifds_.end(); ++i) {
            (*i)->accept(visitor);
        }
    } // TiffSubIfd::doAccept
Unknown