public function createContacts(User $currentUser, array $users)
    {
        $this->om->startFlushSuite();
        $createdContacts = [];

        foreach ($users as $user) {
            $contact = $this->contactRepo->findOneBy(['user' => $currentUser, 'contact' => $user]);

            if (is_null($contact)) {
                $contact = new Contact();
                $contact->setUser($currentUser);
                $contact->setContact($user);
                $this->om->persist($contact);
                $createdContacts[] = $contact;
            }
        }
        $this->om->endFlushSuite();

        return $createdContacts;
    }