docs: @Override
      protected List<ColumnDescription> getColumnDescriptions(
              PortletExecutionAggregationDiscriminator reportColumnDiscriminator,
              PortletExecutionReportForm form) {
          int groupSize = form.getGroups().size();
          int portletSize = form.getPortlets().size();
          int executionTypeSize = form.getExecutionTypeNames().size();
  
          String portletName = reportColumnDiscriminator.getPortletMapping().getFname();
          String groupName = reportColumnDiscriminator.getAggregatedGroup().getGroupName();
          String executionTypeName = reportColumnDiscriminator.getExecutionType().getName();
  
          TitleAndCount[] items =
                  new TitleAndCount[] {
                      new TitleAndCount(portletName, portletSize),
                      new TitleAndCount(executionTypeName, executionTypeSize),
                      new TitleAndCount(groupName, groupSize)
                  };
  
          return titleAndColumnDescriptionStrategy.getColumnDescriptions(
                  items, showFullColumnHeaderDescriptions(form), form);
      }