Form.php

<?php

namespace WhiteOctober\FormBuilderBundle\Model;

use Symfony\Component\Serializer\Normalizer\NormalizableInterface;
use Symfony\Component\Serializer\Normalizer\NormalizerInterface;

/**
 * Model\WhiteOctoberFormBuilderBundle\Form bundle document.
 */
abstract class Form extends \Model\WhiteOctoberFormBuilderBundle\Base\Form implements NormalizableInterface
{
    /**
     * @param NormalizerInterface $normalizer
     * @param  $format
     * @param null $properties
     * @return void
     */
    public function normalize(NormalizerInterface $normalizer, $format, $properties = null)
    {
        return $this->data['fields'];
    }

    public function denormalize(NormalizerInterface $normalizer, $data, $format = null)
    {
        $this->data['fields'] = $data;
    }
}