public function createEntry($group_name, array $options)
    {
        if (! $this->hasGroup($group_name)) {
            throw new \RuntimeException('Menu Group "'.$group_name.'" not found.');
        }

        $entry = new MenuEntry($this->entryOptionsResolver->resolve($options));

        $group = $this->getGroup($group_name);
        $group->addEntry($entry);
    }