for eventName, rules := range rulesMap {
		if nr := rules.Difference(rulesMap2[eventName]); len(nr) != 0 {
			rulesMap[eventName] = nr
		} else {
			delete(rulesMap, eventName)
		}
	}
}

// MatchSimple - returns true if matching object name and event name in rules map.
func (rulesMap RulesMap) MatchSimple(eventName Name, objectName string) bool {
	return rulesMap[eventName].MatchSimple(objectName)
}

	}

	pattern := event.NewPattern(prefix, suffix)

	var eventNames []event.Name
	var mask pubsub.Mask
	for _, s := range values[peerRESTListenEvents] {
		eventName, err := event.ParseName(s)
		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
		mask.MergeMaskable(eventName)
		eventNames = append(eventNames, eventName)
	}

	if bucketName != "" {

	}, "*", TargetID{"1", "webhook"})

	rulesMapCase3 := make(RulesMap)
	rulesMapCase3.add([]Name{ObjectRemovedDelete}, "2010*.jpg", TargetID{"1", "webhook"})

	testCases := []struct {
		eventNames     []Name
		pattern        string
		targetID       TargetID
		expectedResult RulesMap
	}{
		{[]Name{ObjectAccessedAll}, "", TargetID{"1", "webhook"}, rulesMapCase1},

			},
		},
		Source: event.Source{
			Host:      args.Host,
			UserAgent: args.UserAgent,
		},
	}

	isRemovedEvent := args.EventName == event.ObjectRemovedDelete ||
		args.EventName == event.ObjectRemovedDeleteMarkerCreated ||
		args.EventName == event.ObjectRemovedNoOP

	if !isRemovedEvent {
		newEvent.S3.Object.ETag = args.Object.ETag
		newEvent.S3.Object.Size = args.Object.Size

	EventSource       string            `json:"eventSource"`
	AwsRegion         string            `json:"awsRegion"`
	EventTime         string            `json:"eventTime"`
	EventName         Name              `json:"eventName"`
	UserIdentity      Identity          `json:"userIdentity"`
	RequestParameters map[string]string `json:"requestParameters"`
	ResponseElements  map[string]string `json:"responseElements"`

}

// ErrDuplicateEventName - duplicate event name error.
type ErrDuplicateEventName struct {
	EventName Name
}

func (err ErrDuplicateEventName) Error() string {
	return fmt.Sprintf("duplicate event name '%v' found", err.EventName)
}

// ErrUnsupportedConfiguration - unsupported configuration error.
type ErrUnsupportedConfiguration struct{}

		return errors.New("missing event name(s)")
	}

	eventStringSet := set.NewStringSet()
	for _, eventName := range parsedQueue.Events {
		if eventStringSet.Contains(eventName.String()) {
			return &ErrDuplicateEventName{eventName}
		}

		eventStringSet.Add(eventName.String())
	}

	*q = Queue(parsedQueue)

	return nil
}

	objectName, err := url.QueryUnescape(eventData.S3.Object.Key)
	if err != nil {
		return err
	}
	key := eventData.S3.Bucket.Name + "/" + objectName

	data, err := json.Marshal(event.Log{EventName: eventData.EventName, Key: key, Records: []event.Event{eventData}})
	if err != nil {
		return err
	}

	return target.producer.Publish(target.args.Topic, data)
}

	objectName, err := url.QueryUnescape(eventData.S3.Object.Key)
	if err != nil {
		return err
	}
	key := eventData.S3.Bucket.Name + "/" + objectName

	data, err := json.Marshal(event.Log{EventName: eventData.EventName, Key: key, Records: []event.Event{eventData}})
	if err != nil {
		return err
	}

	req, err := http.NewRequest(http.MethodPost, target.args.Endpoint.String(), bytes.NewReader(data))
	if err != nil {

	objectName, err := url.QueryUnescape(eventData.S3.Object.Key)
	if err != nil {
		return err
	}
	key := eventData.S3.Bucket.Name + "/" + objectName

	data, err := json.Marshal(event.Log{EventName: eventData.EventName, Key: key, Records: []event.Event{eventData}})
	if err != nil {
		return err
	}

	token := target.client.Publish(target.args.Topic, target.args.QoS, false, string(data))