/**
  * Get a share.
  *
  * @param int $id
  *
  * @return \Socializr\Models\Share
  */
 protected function getShare($id)
 {
     try {
         return Share::findOrFail($id);
     } catch (ModelNotFoundException $e) {
         throw new HttpErrorException(404, "Share {$id} doesn't exist!");
     }
 }