Unregistering commands

Ok so i am unregistering commands and i have come upon the issue where it does not unregister the command aliases how to go about fixing this ? here is my code(taken from LegionPE-theta):

PHP:

public static function registerAll(Main $main, CommandMap $map){
        $cmds = ["tell","help","me","?","msg"];
        foreach($cmds as $cmd){
            self::unregisterCommand($map, $cmd);
        }
        $map->registerAll("c", [
            new TellCommand($main, "tell", "Send a player a private message", null, ["msg","w","pm"]),
            new LangCommand($main, "lang", "Change your language preference!", null),
            new MeCommand($main, "me", "Shout yourself out!", null),
            new HelpCommand($main, "help", "See the list of commands!", null, ["?"])]);
    }

 

Show the unregisterCommand function, or that example is useless.

 

oh yes sorry(also taken from LegionPE-theta):

PHP:

public static function unregisterCommand(CommandMap $map, $name){
        $cmd = $map->getCommand($name);
        if($cmd instanceof Command){
            $cmd->setLabel($name . "_deprecated");
            $cmd->unregister($map);
            return true;
        }
        return false;
    }

 

$command->getAliases() and unregister them.

 

The _deprecated should be replaced with _disabled, at least, as far as I know.

 

Tired this and still it did not work

 

Make sure the map is an instance of pocketmine\command\SimpleCommandMap and it should work.