outgoing.go
func (op *OutgoingUserProfilePhotosRequest) querystring() querystring {
	toReturn := map[string]string{}
	toReturn["user_id"] = fmt.Sprint(op.UserID)

	if op.Offset != 0 {
		toReturn["offset"] = fmt.Sprint(op.Offset)
	}

	if op.Limit != 0 {
		toReturn["limit"] = fmt.Sprint(op.Limit)
	}

	return querystring(toReturn)
}
func (op *OutgoingUserProfilePhotosRequest) querystring() querystring {
	toReturn := map[string]string{}
	toReturn["user_id"] = fmt.Sprint(op.UserID)

	if op.Offset != 0 {
		toReturn["offset"] = fmt.Sprint(op.Offset)
	}

	if op.Limit != 0 {
		toReturn["limit"] = fmt.Sprint(op.Limit)
	}

	return querystring(toReturn)
}
// querystring implements querystringer to represent the request.