Doctrine\Common\Annotations\CachedReader::getTraitLastModificationTimes PHP Method

    private function getTraitLastModificationTimes(ReflectionClass $reflectionTrait)
    {
        $fileName = $reflectionTrait->getFileName();
        return array_merge([$fileName ? filemtime($fileName) : 0], array_map([$this, 'getTraitLastModificationTimes'], $reflectionTrait->getTraits()));
    }