protected function writeBundleFile($bundlePath, $data)
{
$dir = dirname($bundlePath);
if (!file_exists($dir)) {
mkdir($dir, 0777, true);
}
if (false === file_put_contents($bundlePath, $data, LOCK_EX)) {
// @codeCoverageIgnoreStart
throw new \RuntimeException('Cannot write cache file to "' . $bundlePath . '"');
// @codeCoverageIgnoreEnd
}
return filemtime($bundlePath);
}