public function upload($sourceFile, $destinationFile)
    {
        $destination = $this->storagePath.rtrim($destinationFile, '/');
        Service::$log->msg('Filesystem: Copying file to the backup storage location: ' . $sourceFile);
        copy($sourceFile, $destination);
        Service::$log->msg('Filesystem: Copy ended: '.$destination);

        return $destination;
    }