public function getPotentialTargets(MatcherContract $matcher)
 {
     $potential_targets = $matcher->getMediaList(MatcherContract::MEDIA_POTENTIAL_TARGET);
     // Get a list of media being processed
     $results = Media::query();
     $results = $results->where('status', Media::STATUS_PENDING)->orWhere('status', Media::STATUS_PROCESSING);
     $media = $results->get()->toArray();
     // Extract the id's from the media
     $processing_ids = array_map(function ($result) {
         return $result['duplitron_id'];
     }, $media);
     // Remove any potential targets being processed
     $final_targets = array();
     foreach ($potential_targets as $potential_target) {
         if (in_array($potential_target->id, $processing_ids)) {
             continue;
         }
         $final_targets[] = $potential_target;
     }
     return $final_targets;
 }