code: public String defaultActionHtml() {
  
          if ((getList() != null) && getList().getAllContent().isEmpty()) {
              // TODO: check the need for this
              refreshList();
          }
          StringBuffer result = new StringBuffer(2048);
          result.append(defaultActionHtmlStart());
          result.append(customHtmlStart());
          result.append(defaultActionHtmlContent());
          result.append(customHtmlEnd());
          result.append(defaultActionHtmlEnd());
          return result.toString();
      }
docs: Generates the dialog starting html code.<p>
  
  @return html code