def METHOD_NAME(self, identifier=None, rtype=None, name=None, content=None):
    if identifier:
        rtype, name, content = self._resolve_identifier(identifier)
    name = dns.name.from_text(name).relativize(dns.name.from_text(self.zone))
    update = dns.update.Update(self.zone, keyring=self.keyring)
    if content:
        update.delete(name, rtype, content)
    else:
        update.delete(name, rtype)
    self._run_query(update)
    return True