def METHOD_NAME(self, identifier=None, rtype=None, name=None, content=None):
    """Delete an existing record.
    If the record doesn't exist, does nothing.
    """
    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(f"/v1/domains/{self.domain}/records/{record_id}")
        LOGGER.debug("delete_record: %s", record_id)
    LOGGER.debug("delete_record: %s", True)
    return True