if ($uref->is_node || $uref->is_aranea) {
push @ref, $nref->add($user, $thing->{v}, $thing->{h});
push @{$thing->{pc19n}}, @ref if @ref;
if ($uref->is_node || $uref->is_aranea) {
push @ref, $nref->add($user, $thing->{v}, $thing->{h});
push @{$thing->{pc19n}}, @ref if @ref;