public void Clear()
        {
            IdentityKeysRepository identityKeysRepository = new IdentityKeysRepository();

            identityKeysRepository.DeleteAll();

            PreKeysRepository preKeysRepository = new PreKeysRepository();

            preKeysRepository.DeleteAll();

            SenderKeysRepository senderKeysRepository = new SenderKeysRepository();

            senderKeysRepository.DeleteAll();

            SessionsRepository sessionsRepository = new SessionsRepository();

            sessionsRepository.DeleteAll();

            SignedPreKeysRepository signedPreKeysRepository = new SignedPreKeysRepository();

            signedPreKeysRepository.DeleteAll();
        }