protected function resolveMembers($unsubscribed, Contact $contact, $marketingListId, $optOut)
 {
     if ($optOut) {
         $members = MarketingListMember::getByContactIdAndSubscribed($contact->id, $unsubscribed);
     } else {
         $members = MarketingListMember::getByMarketingListIdContactIdAndUnsubscribed($marketingListId, $contact->id, $unsubscribed);
     }
     if (!is_array($members) && $members !== false) {
         $members = array($members);
     }
     if (empty($members)) {
         $marketingList = MarketingList::getById(intval($marketingListId));
         if ($unsubscribed === 1 && !empty($marketingList) && $marketingList->anyoneCanSubscribe && !$marketingList->memberAlreadyExists($contact->id)) {
             $members[0] = new MarketingListMember();
             $members[0]->contact = $contact;
             $members[0]->marketingList = $marketingList;
         } else {
             return false;
         }
     }
     return $members;
 }