func setTaskAttachmentSent(event *sendableEvent) {
	if event.taskChange.Attachment != nil {
		event.taskChange.Attachment.SetSentStatus()
		event.taskChange.Attachment.StopAckTimer()
	}
}
func setTaskAttachmentSent(event *sendableEvent) {
	if event.taskChange.Attachment != nil {
		event.taskChange.Attachment.SetSentStatus()
		event.taskChange.Attachment.StopAckTimer()
	}
}
// setTaskAttachmentSent sets the event's task attachment object as sent