code: def delete_record_set(self, record_set):
          
          if not isinstance(record_set, ResourceRecordSet):
              raise ValueError("Pass a ResourceRecordSet")
          self._deletions += (record_set,)
docs: Append a record set to the 'deletions' for the change set.
  
          :type record_set:
              :class:`google.cloud.dns.resource_record_set.ResourceRecordSet`
          :param record_set: the record set to append.
  
          :raises: ``ValueError`` if ``record_set`` is not of the required type.