hal-1.0.0/src/Normalizer/NormalizerBase.php

<?php

namespace Drupal\hal\Normalizer;

use Drupal\serialization\Normalizer\NormalizerBase as SerializationNormalizerBase;
use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;

/**
 * Base class for Normalizers.
 */
abstract class NormalizerBase extends SerializationNormalizerBase implements DenormalizerInterface {

  /**
   * {@inheritdoc}
   */
  protected $format = ['hal_json'];

}