/**
  * Normalize a result from OSS.
  *
  * @param OSSObject  $object
  *
  * @return array file metadata
  */
 protected function normalizeObject(OSSObject $object)
 {
     $name = $object->getKey();
     $name = $this->removePathPrefix($name);
     $mimetype = explode('; ', $object->getContentType());
     return ['type' => 'file', 'dirname' => Util::dirname($name), 'path' => $name, 'timestamp' => $object->getLastModified()->getTimestamp(), 'mimetype' => reset($mimetype), 'size' => $object->getContentLength()];
 }