$oldFile = OldLocalFile::newFromArchiveName( $this->getTitle(), $localFile->getRepo(), $old );
$source = $localFile->getArchiveVirtualUrl( $old );
$oldFile = OldLocalFile::newFromArchiveName( $this->getTitle(), $localFile->getRepo(), $old );
$source = $localFile->getArchiveVirtualUrl( $old );