@Override
 @EventHandler
 public void onDisconnect(DisconnectEvent event) {
   synchronized (bots) {
     bots.remove(this);
   }
   super.onDisconnect(event);
 }
 @Override
 @EventHandler
 public void onChatReceived(ChatReceivedEvent event) {
   super.onChatReceived(event);
   String message = Util.stripColors(event.getMessage());
   if (message.startsWith("Please register with \"/register")) {
     String password = Util.generateRandomString(10 + random.nextInt(6));
     bot.say("/register " + password + " " + password);
   } else if (message.contains("You are not member of any faction.")
       && spamMessage != null
       && createFaction) {
     String msg = "/f create " + Util.generateRandomString(7 + random.nextInt(4));
     bot.say(msg);
   }
   for (String s : captchaList) {
     Matcher captchaMatcher = Pattern.compile(s).matcher(message);
     if (captchaMatcher.matches()) bot.say(captchaMatcher.group(1));
   }
 }