For anyone else who needs this:
function hi_get_related_posts( $post_id ) {
$pl_manager = new RP4WP_Post_Link_Manager();
$related_posts = $pl_manager->get_children( $post_id );
$related_ids = array();
foreach ( $related_posts as $post ) {
$related_ids[] = $post->ID;
}
return $related_ids;
}
My comparison is of the Pro versions of all three. I tried very hard to like your add-on but couldn’t get there. I’ve started my site with several add-ons installed, and after completing it, I disabled the elements I didn’t use or removed the add-ons I didn’t use at all. I never found a place for Essentials. The other add-ons won in every case.