private FacebookAccount lookupFacebookAccount(String key) {
   try {
     FacebookAccount facebookAccount =
         facebookSystem.lookupFacebookAccount(SystemViewpoint.getInstance(), key);
     return facebookAccount;
   } catch (ParseException e) {
     throw new RuntimeException("Could not parse the key " + key + " as a user guid", e);
   } catch (NotFoundException e) {
     throw new RuntimeException(
         "Could not find the user or facebook account for the user with guid " + key, e);
   }
 }