code: def _create_record(self, rtype, name, content):
          
          if not self._list_records(rtype, name, content):
              self._update_records([{}], {
                  'type': rtype,
                  'hostname': self._relative_name(name),
                  'destination': content,
                  'priority': self._get_lexicon_option('priority'),
              })
          LOGGER.debug('create_record: %s', True)
          return True
docs: Create record. If it already exists, do nothing.