code: def get_as_csv(self, output_file_path: Optional[str] = None) -> str:
          
          output = StringIO() if not output_file_path else open(output_file_path, 'w')
          try:
              csv_writer = csv.writer(output)
  
              csv_writer.writerow(self.columns)
              for row in self.rows:
                  csv_writer.writerow(row)
              output.seek(0)
              return output.read()
          finally:
              output.close()
docs: Returns the table object as a CSV string.
  
          :param output_file_path: The output file to save the CSV to, or None.
          :return: CSV representation of the table.