public function count(): int
    {
        if ($this->count == null) {
            $this->count = 0;

            if ($handle = opendir($this->fileInfo->getAbsoluteFilePath())) {
                while (($file = readdir($handle)) !== false) {
                    if (!in_array($file, array('.', '..'))) {
                        $this->count++;
                    }
                }

                closedir($handle);
            }
        }

        return $this->count;
    }