Command Base

    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        if (!(sender instanceof Player)) {
            sender.sendMessage("You can't do this command from the console!");
            return true;
        }

        Player player = (Player) sender;

        if (!(player.hasPermission("test.example"))) {
            player.sendMessage(ChatColor.RED + "Du har saknar 'test.example'");
            return true;
        }

        if (args.length == 0) {
            // TODO
            return true;
        }

        Player target = Bukkit.getServer().getPlayerExact(args[0]);

        if (target == null) {
            // TODO
            return true;
        }

        // TODO

        return true;
    }
}