public function createMainAccountContact(Contact $contact, AccountInterface $account, $position = null)
    {
        $accountContact = new AccountContact();
        $accountContact->setAccount($account);
        $accountContact->setContact($contact);
        $accountContact->setMain(true);
        $this->em->persist($accountContact);
        $contact->addAccountContact($accountContact);
        $accountContact->setPosition($position);

        return $accountContact;
    }