def search
      indices.map do |index|
        result = result_object(index)
        { label: result.build_html, value: result.url }
      end
    end
def search
      indices.map do |index|
        result = result_object(index)
        { label: result.build_html, value: result.url }
      end
    end
This translates the filtered indices into meaningful result objects.
 These require a { label: ... value: ... } to accommodate jquery-ui.

 Note that the result_object#url method is defined in
 Udongo::Search::ResultObjects::Backend::Page.