public function getContentType(string $id): ?ContentType
    {
        foreach ($this->clientsConfig as $clientConfig) {
            /** @var \Contentful\Delivery\Client $client */
            $client = $clientConfig['service'];

            foreach ($client->getContentTypes()->getItems() as $contentType) {
                /** @var \Contentful\Delivery\Resource\ContentType $contentType */
                if ($contentType->getId() === $id) {
                    return $contentType;
                }
            }
        }

        return null;
    }