protected function loadThemes()
    {
        $themesDirs = array(
            __DIR__.'/../../data/themes/Ladybug/Theme',
            __DIR__.'/../../../ladybug-themes/Ladybug/Theme'
        );

        foreach ($themesDirs as $dir) {
            if (is_dir($dir)) {
                $finder = new Finder();
                $finder->in($dir)->files()->depth(1)->name('*Theme.php');

                foreach ($finder as $file) {
                    /** @var SplFileInfo $file */
                    $this->registerTheme($file);
                }
            }
        }
    }