code: def listPrimaryDatasets(self, primary_ds_name="", primary_ds_type=""):
          
          primary_ds_name = primary_ds_name.replace("*", "%")
          primary_ds_type = primary_ds_type.replace("*", "%")
          try:
              return self.dbsPrimaryDataset.listPrimaryDatasets(primary_ds_name, primary_ds_type)
          except dbsException as de:
              dbsExceptionHandler(de.eCode, de.message, self.logger.exception, de.message)
          except Exception as ex:
              sError = "DBSReaderModel/listPrimaryDatasets. %s\n Exception trace: \n %s." \
                      % (ex, traceback.format_exc() )
              dbsExceptionHandler('dbsException-server-error',  dbsExceptionCode['dbsException-server-error'], self.logger.exception, sError)
docs: API to list primary datasets
  
          :param primary_ds_type: List primary datasets with primary dataset type (Optional)
          :type primary_ds_type: str
          :param primary_ds_name: List that primary dataset (Optional)
          :type primary_ds_name: str
          :returns: List of dictionaries containing the following keys (primary_ds_type_id, data_type)
          :rtype: list of dicts
          :returns: List of dictionaries containing the following keys (create_by, primary_ds_type, primary_ds_id, primary_ds_name, creation_date)
          :rtype: list of dicts