provider/aws.go
func (p *AWSProvider) newChanges(action string, endpoints []*endpoint.Endpoint, recordsCache []*endpoint.Endpoint, zones map[string]*route53.HostedZone) []*route53.Change {
	changes := make([]*route53.Change, 0, len(endpoints))

	for _, endpoint := range endpoints {
		changes = append(changes, p.newChange(action, endpoint, recordsCache, zones))
	}

	return changes
}
func (p *AWSProvider) newChanges(action string, endpoints []*endpoint.Endpoint, recordsCache []*endpoint.Endpoint, zones map[string]*route53.HostedZone) []*route53.Change {
	changes := make([]*route53.Change, 0, len(endpoints))

	for _, endpoint := range endpoints {
		changes = append(changes, p.newChange(action, endpoint, recordsCache, zones))
	}

	return changes
}
// newChanges returns a collection of Changes based on the given records and action.