StorageClass string          `xml:"StorageClass,omitempty"`
	Tagging      *tags.Tags      `xml:"Tagging,omitempty"`
	UserMetadata []MetadataEntry `xml:"UserMetadata"`
}

// OutputLocation specifies bucket where object needs to be restored
type OutputLocation struct {
	S3 S3Location `xml:"S3,omitempty"`
}

// IsEmpty returns true if output location not specified.
func (o *OutputLocation) IsEmpty() bool {