/**
* @inheritdoc
*/
public function relationship($data, array $links = [], $meta = null, $statusCode = 200, array $headers = [])
{
if ($data instanceof PageInterface) {
list($data, $meta, $links) = $this->extractPage($data, $meta, $links);
}
return $this->responses->getIdentifiersResponse($data, $statusCode, $links, $meta, $headers);
}