code: def _delete_record(self, identifier=None, rtype=None, name=None, content=None):
          
          if not identifier:
              records = self._list_records(rtype, name, content)
              identifiers = [record["id"] for record in records]
          else:
              identifiers = [identifier]
  
          LOGGER.debug("delete_records: %s", identifiers)
  
          for record_id in identifiers:
              self._delete(
                  "/v1/domains/{0}/records/{1}".format(
                      self.domain, record_id
                  )
              )
              LOGGER.debug("delete_record: %s", record_id)
  
          LOGGER.debug("delete_record: %s", True)
          return True
docs: Delete an existing record.
  
          If the record doesn't exist, does nothing.