code: @Override
      public void renderItem(Listitem item, Document doc) {
          log.trace("item render");
          item.setSelectable(true);
          item.addForward(Events.ON_DOUBLE_CLICK, item.getListbox(), Events.ON_DOUBLE_CLICK);
          addCell(item, "");
          addCell(item, doc.getDateTime());
          addCell(item, doc.getTitle());
          addCell(item, doc.getLocationName());
          addCell(item, doc.getAuthorName());
      }
docs: Render the list item for the specified document.
  
  @param item List item to render.
  @param doc The document associated with the list item.