Symfony\Component\Serializer\SerializerInterface::denormalize PHP Method

    function denormalize($data, $type, $format = null);

 /**
  * {@inheritdoc}
  */
 public function denormalize($data, $class, $format = null, array $context = [])
 {
     $result = $this->createObject($class);
     $fields = $this->fieldHelper->getFields($class, true);
     foreach ($fields as $field) {
         $fieldName = $field['name'];
         if (array_key_exists($fieldName, $data)) {
             $value = $data[$fieldName];
             if ($data[$fieldName] !== null && ($this->fieldHelper->isRelation($field) || $this->fieldHelper->isDateTimeField($field))) {
                 if ($this->fieldHelper->isMultipleRelation($field)) {
                     $entityClass = sprintf('ArrayCollection<%s>', $field['related_entity_name']);
                 } elseif ($this->fieldHelper->isSingleRelation($field)) {
                     $entityClass = $field['related_entity_name'];
                 } else {
                     $entityClass = 'DateTime';
                     $context = array_merge($context, ['type' => $field['type']]);
                 }
                 $context = array_merge($context, ['fieldName' => $fieldName]);
                 $value = $this->serializer->denormalize($value, $entityClass, $format, $context);
             }
             $this->fieldHelper->setObjectValue($result, $fieldName, $value);
         }
     }
     return $result;
 }