for my $e ($dom->find('structured-macro[name="include"]')->each) {
  my $include = $e->find('page[ri:content-title$=.]')->[0];
  DEBUG("include contents: < $include >");

  my ($title, $space_key);

  $include =~ /content-title="(?<title>[_a-zA-Z0-9\,\:\- ]+)"/;
  $title = $+{title};

  $include =~ /ri:space-key="(?<space_key>[a-zA-Z]+)"?/;
  $space_key = $+{space_key};
  $space_key //= 'sp';

  DEBUG("include extracted fields: < space: $space_key title: $title >");

  my $cmd = qq[get-page-source --called '$title' --from 'AppNexus:$space_key'];
  my $included_content = `$cmd`;
  $included_content =~ s/^Source\n//;
  $e->replace($included_content);
}