def METHOD_NAME(self, kms_key_alias_name, tolerate_errors=True):
    LOGGER.info("Deleting the '%s' alias in the KMS", kms_key_alias_name)
    for region_name in self.region_names:
        try:
            self.mapping[region_name]['client'].METHOD_NAME(AliasName=kms_key_alias_name)
            if kms_key_alias_name in self.mapping[region_name]['kms_keys_aliases']:
                self.mapping[region_name]['kms_keys_aliases'].remove(kms_key_alias_name)
        except botocore.exceptions.ClientError as exc:
            LOGGER.debug(exc.response)
            if not tolerate_errors:
                raise