def list_revisions(path)
      resp = request('/files/list_revisions', path: path)
      entries = resp['entries'].map { |e| FileMetadata.new(e) }
      return entries, resp['is_deleted']
    end
def list_revisions(path)
      resp = request('/files/list_revisions', path: path)
      entries = resp['entries'].map { |e| FileMetadata.new(e) }
      return entries, resp['is_deleted']
    end
Get the revisions of a file.

 @param [String] path
 @return [Array<Dropbox::FileMetadata>] entries
 @return [Boolean] is_deleted