pocketmine\command\SimpleCommandMap::register PHP Метод

    public function register($fallbackPrefix, Command $command, $label = null, $overrideConfig = false)
    {
        if ($label === null) {
            $label = $command->getName();
        }
        $label = strtolower(trim($label));
        //Check if command was disabled in config and for override
        if (!($this->commandConfig[$label] ?? $this->commandConfig["default"] ?? true or $overrideConfig)) {
            return false;
        }
        $fallbackPrefix = strtolower(trim($fallbackPrefix));
        $registered = $this->registerAlias($command, false, $fallbackPrefix, $label);
        $aliases = $command->getAliases();
        foreach ($aliases as $index => $alias) {
            if (!$this->registerAlias($command, true, $fallbackPrefix, $alias)) {
                unset($aliases[$index]);
            }
        }
        $command->setAliases($aliases);
        if (!$registered) {
            $command->setLabel($fallbackPrefix . ":" . $label);
        }
        $command->register($this);
        return $registered;
    }