Phrozn\Runner\CommandLine\Commands::valid PHP Метод

    public function valid()
    {
        $it = $this->getIterator();
        // skip directories and file !*.yml
        while ($it->valid() && ($it->isDot() || $it->isLink() || $it->isFile() === false || $it->getBasename('.yml') === $it->getFilename())) {
            $this->getIterator()->next();
        }
        return $this->getIterator()->valid();
    }