QPDFPageObjectHelper::addContentTokenFilter(
    PointerHolder<QPDFObjectHandle::TokenFilter> token_filter)
{
    this->oh.addContentTokenFilter(token_filter);
}
QPDFPageObjectHelper::addContentTokenFilter(
    PointerHolder<QPDFObjectHandle::TokenFilter> token_filter)
{
    this->oh.addContentTokenFilter(token_filter);
}