BetterReflection\SourceLocator\Exception\InvalidFileInfo::fromNonSplFileInfo PHP Метод

    public static function fromNonSplFileInfo($nonSplFileInfo)
    {
        return new self(sprintf('Expected an iterator of SplFileInfo instances, %s given instead', is_object($nonSplFileInfo) ? get_class($nonSplFileInfo) : gettype($nonSplFileInfo)));
    }

 /**
  * @param \Iterator|\SplFileInfo[] $fileInfoIterator note: only \SplFileInfo allowed in this iterator
  *
  * @throws InvalidFileInfo In case of iterator not contains only SplFileInfo
  */
 public function __construct(\Iterator $fileInfoIterator)
 {
     foreach ($fileInfoIterator as $fileInfo) {
         if (!$fileInfo instanceof \SplFileInfo) {
             throw InvalidFileInfo::fromNonSplFileInfo($fileInfo);
         }
     }
     $this->fileSystemIterator = $fileInfoIterator;
 }