if s3Key.RuleList.isEmpty() {
		return nil
	}
	type s3KeyWrapper S3Key
	return e.EncodeElement(s3KeyWrapper(s3Key), start)
}

// common - represents common elements inside <QueueConfiguration>, <CloudFunctionConfiguration>
// and <TopicConfiguration>
type common struct {
	ID     string `xml:"Id" json:"Id"`
	Filter S3Key  `xml:"Filter" json:"Filter"`
	Events []Name `xml:"Event" json:"Event"`
}