code: public List<String> getHeaderRowContents(String sheetName, int size) {
          return excelReader.getHeaderRowContents(sheetName, size);
      }
docs: Utility to get the header row contents of the excel sheet
  
  @param sheetName
  The excel sheet name where the data is to be fetched
  @param size
  The number of columns to read, including empty and blank column.
  @return the header row data.