src/ObjectIdentifier/DoctrineObjectIdentifier.php
public function getIdentity($object)
    {
        $id = $this->metadata->getIdentifierValues($object);
        if (count($id) === 1) {
            $id = reset($id);
        }

        return $id;
    }
public function getIdentity($object)
    {
        $id = $this->metadata->getIdentifierValues($object);
        if (count($id) === 1) {
            $id = reset($id);
        }

        return $id;
    }
{@inheritdoc}