public function double_extension()
 {
     $this->assertEquals('application/x-tar-gz', MimeType::getByFilename('test.tar.gz'));
 }
 /**
  * Load an image
  *
  * @param   peer.URL source
  * @return  string[2] data and contenttype
  */
 public function load($source)
 {
     return [FileUtil::getContents(new File($source->getURL())), MimeType::getByFilename($source->getURL())];
 }