public function find(string $identifier): ?OptInTokenInterface
    {
        /** @var OptInModel $adapter */
        $adapter = $this->framework->getAdapter(OptInModel::class);

        if (!$model = $adapter->findByToken($identifier)) {
            return null;
        }

        return new OptInToken($model, $this->framework);
    }
public function find(string $identifier): ?OptInTokenInterface
    {
        /** @var OptInModel $adapter */
        $adapter = $this->framework->getAdapter(OptInModel::class);

        if (!$model = $adapter->findByToken($identifier)) {
            return null;
        }

        return new OptInToken($model, $this->framework);
    }
{@inheritdoc}