You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: get-timestamp.go
    path of file: ./repos/openreplay/backend/pkg/messages
    
    the code of the file until where you have to start completion: // Auto-generated, do not edit
package messages

func GetTimestamp(message Message) uint64 {
	switch msg := message.(type) {

	case *IOSSessionStart:
		return msg.Timestamp

	case *IOSSessionEnd:
		return msg.Timestamp

	case *IOSMetadata:
		return msg.Timestamp

	case *IOSEvent:
		return msg.Tim
    
func GetTimestamp(message Message) uint64 {
	switch msg := message.(type) {

	case *IOSSessionStart:
		return msg.Timestamp

	case *IOSSessionEnd:
		return msg.Timestamp

	case *IOSMetadata:
		return msg.Timestamp

	case *IOSEvent:
		return msg.Timestamp

	case *IOSUserID:
		return msg.Timestamp

	case *IOSUserAnonymousID:
		return msg.Timestamp

	case *IOSScreenChanges:
		return msg.Timestamp

	case *IOSCrash:
		return msg.Timestamp

	case *IOSViewComponentEvent:
		return msg.Timestamp

	case *IOSClickEvent:
		return msg.Timestamp

	case *IOSInputEvent:
		return msg.Timestamp

	case *IOSPerformanceEvent:
		return msg.Timestamp

	case *IOSLog:
		return msg.Timestamp

	case *IOSInternalError:
		return msg.Timestamp

	case *IOSNetworkCall:
		return msg.Timestamp

	case *IOSSwipeEvent:
		return msg.Timestamp

	case *IOSBatchMeta:
		return msg.Timestamp

	case *IOSIssueEvent:
		return msg.Timestamp

	}
	return uint64(message.Meta().Timestamp)
}