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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 enable_sns_notification(self, region, trailName):
 """Enable SNS notifications for a Trail Args: region (`str`):
 Name of the AWS region trailName (`str`):
 Name of the CloudTrail Trail Returns: `None` """

        ct = self.session.client('cloudtrail', region_name=region)
        ct.update_trail(Name=trailName, SnsTopicName=self.topic_name)

        auditlog(
            event='cloudtrail.enable_sns_notification',
            actor=self.ns,
            data={
                'account': self.account.account_name,
                'region': region
            }
        )
        self.log.info('Enabled SNS notifications for trail {} in {}/{}'.format(
            trailName,
            self.account.account_name,
            region
        ))