private function seedBlockTypes()
    {
        BlockType::firstOrCreate(['name' => 'basic', 'handler' => Gzero\Cms\Handlers\Block\Basic::class]);
        BlockType::firstOrCreate(['name' => 'menu', 'handler' => Gzero\Cms\Handlers\Block\Menu::class]);
        BlockType::firstOrCreate(['name' => 'slider', 'handler' => Gzero\Cms\Handlers\Block\Slider::class]);
    }