Convert this ResourceRecordSet into XML
        to be saved via the ChangeResourceRecordSetsRequest

def to_xml(self):
        """Convert this ResourceRecordSet into XML
        to be saved via the ChangeResourceRecordSetsRequest"""
        changesXML = ""
        for change in self.changes:
            changeParams = {"action": change[0], "record": change[1].to_xml()}
            changesXML += self.ChangeXML % changeParams
        params = {"comment": self.comment, "changes": changesXML}
        return self.ChangeResourceRecordSetsBody % params