public class CheckandRankupCMD implements CommandExecutor {
    LuckPerms api = LuckPermsProvider.get();
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {

        if (cmd.getName().equalsIgnoreCase("checkandrankup")) {
            if (args.length != 3) {
                sender.sendMessage("Incorrect Usage: /checkandrankup (player) (rankfrom) (rankto)");
                return false;
            }
            Player player = Bukkit.getServer().getPlayer(args[0]);
            if (player == null) {
                sender.sendMessage("User doesn't exist");
                return false;
            }
            User user = api.getPlayerAdapter(Player.class).getUser(player);
            Group group = api.getGroupManager().getGroup(args[1]);
            if (group == null) {
                sender.sendMessage("Group 1 doesn't exist!");
                return false;
            }
            Group group2 = api.getGroupManager().getGroup(args[2]);
            if (group2 == null) {
                sender.sendMessage("Group 2 doesn't exist!");
                return false;
            }
            if (!(user.getPrimaryGroup().equalsIgnoreCase(group.getName()))) {
                sender.sendMessage("User doesn't have that group.");
                return false;
            }
            if (user.getPrimaryGroup().equalsIgnoreCase(group2.getName())) {
                sender.sendMessage("User already has that group!");
                return false;
            }
            InheritanceNode node = InheritanceNode.builder(group2.getName()).value(true).build();
            InheritanceNode node2 = InheritanceNode.builder(group.getName()).value(true).build();
            user.data().add(node);
            user.data().remove(node2);
            api.getUserManager().saveUser(user);
            //sender.sendMessage("test");
            return false;
        }
        return false;
    }
}