if (cmd.getName().equalsIgnoreCase("untag")){
   if (args.length == 1) {
    Player target = Bukkit.getPlayer(args[0]);

          if (getNpcPlayerHelper().isNpc(player) && target != null) {
              getTagManager().untag(target.getUniqueId());
          }
   }
   else {
    p.sendMessage("/untag <player>");
   }
  }