std::string Box_url::dump(Indent& indent) const
{
  std::ostringstream sstr;
  sstr << Box::dump(indent);
  //sstr << dump_children(indent);

  sstr << indent << "location: " << m_location << "\n";

  return sstr.str();
}
std::string Box_url::dump(Indent& indent) const
{
  std::ostringstream sstr;
  sstr << Box::dump(indent);
   

  sstr << indent << "location: " << m_location << "\n";

  return sstr.str();
}