/**
  * @param string $class
  * @param Entity $entity
  *
  * @return string
  */
 protected function generateFileContent($class, $entity)
 {
     $generator = new FileGenerator();
     $descriptor = $entity->getFileDescriptor();
     $generator->setClass($class);
     $generator->setDocblock(DocBlockGenerator::fromArray(array('shortDescription' => 'Generated by Protobuf protoc plugin.', 'longDescription' => 'File descriptor : ' . $descriptor->getName())));
     return $generator->generate();
 }