code: @Programmatic
      public <T> List<T> fromExcel(
              final Blob excelBlob,
              final WorksheetSpec worksheetSpec) throws ExcelService.Exception {
          final List<List<?>> listOfList =
                  fromExcel(excelBlob, Collections.singletonList(worksheetSpec));
          return (List<T>) listOfList.get(0);
      }
docs: As {@link #fromExcel(Blob, Class, String)}, but specifying the class name and sheet name by way of a
  {@link WorksheetSpec}.