protected function publishDirectory($sourcePath, $relativeTargetPathAndFilename)
    {
        $targetPathAndFilename = $this->path . $relativeTargetPathAndFilename;

        if (@stat($sourcePath) === false) {
            throw new TargetException(sprintf('Could not publish directory "%s" into resource publishing target "%s" because the source is not accessible (file stat failed).', $sourcePath, $this->name), 1416244512);
        }

        if (!file_exists(dirname($targetPathAndFilename))) {
            Files::createDirectoryRecursively(dirname($targetPathAndFilename));
        }

        try {
            if (Files::is_link($targetPathAndFilename)) {
                Files::unlink($targetPathAndFilename);
            }
            if ($this->relativeSymlinks) {
                $result = Files::createRelativeSymlink($sourcePath, $targetPathAndFilename);
            } else {
                $temporaryTargetPathAndFilename = $targetPathAndFilename . '.' . Algorithms::generateRandomString(13) . '.tmp';
                symlink($sourcePath, $temporaryTargetPathAndFilename);
                $result = rename($temporaryTargetPathAndFilename, $targetPathAndFilename);
            }
        } catch (\Exception $exception) {
            $result = false;
        }
        if ($result === false) {
            throw new TargetException(sprintf('Could not publish "%s" into resource publishing target "%s" because the source directory could not be symlinked at target location.', $sourcePath, $this->name), 1416244515, (isset($exception) ? $exception : null));
        }

        $this->logger->debug(sprintf('FileSystemSymlinkTarget: Published directory. (target: %s, file: %s)', $this->name, $relativeTargetPathAndFilename));
    }