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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def update_route53_records(self, domain_name, dns_name):
 """ Updates Route53 Records following GW domain creation """

        zone_id = self.get_hosted_zone_id_for_domain(domain_name)

        is_apex = self.route53.get_hosted_zone(Id=zone_id)['HostedZone']['Name'][:-1] == domain_name
        if is_apex:
            record_set = {
                'Name': domain_name,
                'Type': 'A',
                'AliasTarget': {
                    'HostedZoneId': 'Z2FDTNDATAQYW2', # This is a magic value that means "CloudFront"
                    'DNSName': dns_name,
                    'EvaluateTargetHealth': False
                }
            }
        else:
            record_set = {
                'Name': domain_name,
                'Type': 'CNAME',
                'ResourceRecords': [
                    {
                        'Value': dns_name
                    }
                ],
                'TTL': 60
            }

        # Related: https://github.com/boto/boto3/issues/157
        # and: http://docs.aws.amazon.com/Route53/latest/APIReference/CreateAliasRRSAPI.html
        # and policy: https://spin.atomicobject.com/2016/04/28/route-53-hosted-zone-managment/
        # pure_zone_id = zone_id.split('/hostedzone/')[1]

        # XXX: ClientError: An error occurred (InvalidChangeBatch) when calling the ChangeResourceRecordSets operation:
        # Tried to create an alias that targets d1awfeji80d0k2.cloudfront.net., type A in zone Z1XWOQP59BYF6Z,
        # but the alias target name does not lie within the target zone
        response = self.route53.change_resource_record_sets(
            HostedZoneId=zone_id,
            ChangeBatch={
                'Changes': [
                    {
                        'Action': 'UPSERT',
                        'ResourceRecordSet': record_set
                    }
                ]
            }
        )

        return response