/**
  * Download a specific attachment.
  *
  * @param \AbuseIO\Models\Evidence $evidence
  * @param string                   $filename [description]
  *
  * @return \Illuminate\Http\Response
  */
 public function attachment(Evidence $evidence, $filename)
 {
     if ($attachment = $evidence->getAttachment($filename)) {
         return response($attachment->getContent(), 200)->header('Content-Type', $attachment->getContentType())->header('Content-Transfer-Encoding', 'Binary')->header('Content-Disposition', "attachment; filename=\"{$filename}\"");
     } else {
         return abort(404);
     }
 }