public function beforeRun(SourceSetEvent $sourceSetEvent): void
    {
        /** @var SourceInterface $source */
        foreach ($sourceSetEvent->updatedSources() as $source) {
            foreach ($this->extensions as $extension) {
                if (fnmatch("*.{$extension}", $source->filename())) {
                    $source->data()->append('converters', SculpinTextileBundle::CONVERTER_NAME);
                    break;
                }
            }
        }
    }