/**
  * Gets a resource instance for the provided model data
  * @param mixed $data Data to adapt
  * @param \ride\library\http\jsonapi\JsonApiDocument $document Document
  * which is requested
  * @param string $relationshipPath dot-separated list of relationship names
  * @return JsonApiResource|null
  */
 public function getResource($data, JsonApiDocument $document, $relationshipPath = null)
 {
     $resource = parent::getResource($data, $document, $relationshipPath);
     $value = $resource->getAttribute('value');
     if ($value && !StringHelper::startsWith($value, array('http://', 'https://'))) {
         $dataUri = $this->web->getHttpFactory()->createDataUriFromFile($value);
         if ($dataUri === null) {
             $resource->setAttribute('value', null);
         } else {
             $resource->setAttribute('value', $dataUri->encode());
         }
     }
     $query = $document->getQuery()->getParameter('url');
     if ($this->assetService && ($query == '1' || $query == 'true')) {
         try {
             $url = $this->assetService->getAssetUrl($data);
         } catch (ImageException $exception) {
             $url = null;
         }
         $resource->setMeta('url', $url);
     }
     $query = $document->getQuery()->getParameter('images');
     if ($this->assetService && ($query == '1' || $query == 'true')) {
         $images = array();
         $imageStyles = $this->assetService->getImageStyles();
         foreach ($imageStyles as $imageStyle => $null) {
             try {
                 $url = $this->assetService->getAssetUrl($data, $imageStyle, true);
             } catch (ImageException $exception) {
                 $url = null;
             }
             if ($url) {
                 $images[$imageStyle] = $url;
             }
         }
         $resource->setMeta('images', $images);
     }
     return $resource;
 }
 /**
  * Checks if the provided value is a URL
  * @param string $value Value to check
  * @return boolean
  */
 private function isUrl($value)
 {
     return StringHelper::startsWith($value, array('http://', 'https://'));
 }