code: def check_timeseries_id(self, dataset):
          '''
          Checks that if a variable exists for the time series id it has the appropriate attributes
  
          :param netCDF4.Dataset dataset: An open netCDF dataset
          '''
          timeseries_ids = dataset.get_variables_by_attributes(cf_role='timeseries_id')
          # No need to check
          if not timeseries_ids:
              return
          test_ctx = TestCtx(BaseCheck.MEDIUM, 'Recommended attributes for the timeSeries variable')
          timeseries_variable = timeseries_ids[0]
          test_ctx.assert_true(
              getattr(timeseries_variable, 'long_name', '') != "",
              "long_name attribute should exist and not be empty"
          )
          return test_ctx.to_result(f check_timeseries_id(self, dataset):
          '''
          Checks that if a variable exists for the time series id it has the appropriate attributes
  
          :param netCDF4.Dataset dataset: An open netCDF dataset
          '''
          timeseries_ids = dataset.get_variables_by_attributes(cf_role='timeseries_id')
          # No need to check
          if not timeseries_ids:
              return
          test_ctx = TestCtx(BaseCheck.MEDIUM, 'Recommended attributes for the timeSeries variable')
          timeseries_variable = timeseries_ids[0]
          test_ctx.assert_true(
              getattr(timeseries_variable, 'long_name', '') != "",
              "long_name attribute should exist and not be empty"
          )
          return test_ctx.to_result()
docs: Checks that if a variable exists for the time series id it has the appropriate attributes
  
          :param netCDF4.Dataset dataset: An open netCDF dataset