code: public function loadMetadataForClass($className)
      {
          $class = new ReflectionClass($className);
          $classAnnotations = $this->reader->getClassAnnotations($class);
  
          if ($classAnnotations) {
              foreach ($classAnnotations as $key => $annot) {
                  if ( ! is_numeric($key)) {
                      continue;
                  }
  
                  $classAnnotations[get_class($annot)] = $annot;
              }
          }
  
          if (!isset($classAnnotations['ML\HydraBundle\Mapping\Expose'])) {
              return null;
          }
  
          $annotation = $classAnnotations['ML\HydraBundle\Mapping\Expose'];
  
          $metadata = new ClassMetadata($className);
          $metadata->setExposeAs($annotation->as);
          $metadata->setIri($annotation->getIri());
  
          $this->documentRouteAndOperations($metadata, $class);
          $this->documentProperties($metadata, $class);
  
  
          // If this class represents an external definition, we don't need to
          // collect all data; just the one necessary for the serializer
          if ($metadata->isExternalReference()) {
              return $metadata;
          }
  
          $docu = $this->getDocBlockText($class);
  
          $metadata->setTitle($docu['title']);
          $metadata->setDescription($docu['description']);
  
          return $metadata;
      }
docs: {@inheritDoc}