code: public JQueryElement getDropdownResultElement() {
          String dropdownId = getDropdownContainerElement().attr("id").toString();
          if (dropdownId != null && !(dropdownId.isEmpty())) {
              dropdownId = dropdownId.replace("container", "results");
              return $("#" + dropdownId);
          } else {
              GWT.log("The element dropdown-result ul element is undefined.", new NullPointerException());
          }
          return null;
      }
docs: Will get the Selection Results ul element containing all the combobox items.