def restore(path, rev)
      resp = request('/files/restore', path: path, rev: rev)
      FileMetadata.new(resp)
    end
def restore(path, rev)
      resp = request('/files/restore', path: path, rev: rev)
      FileMetadata.new(resp)
    end
Restore a file to a specific revision.

 @param [String] path
 @param [String] rev
 @return [Dropbox::FileMetadata]