private function getThumbName($pathName, $possibleThumbPathName)
{
$relativePath = $this->MediaPaths->makeRelativePath($pathName);
$paths = $this->MediaPaths->fileVersionInfo($relativePath);
if (!file_exists($paths->thumbnail) && !$this->attemptThumbGeneration($pathName, $paths->thumbnail)) {
return $this->getDefaultThumb($pathName);
}
return $paths->thumbnail_url;
}