public function createForPlayer($login)
    {
        if (!isset($this->groups[$login])) {
            $class = $this->class;
            /** @var Group $group */
            $group = new $class(null, $this->dispatcher);

            $this->groups[$login] = $group;
            $group->addLogin($login);
        }

        return $this->groups[$login];
    }