public static async Task removeEvent(int eventIndex)
        {
            var eventList = JsonConvert.DeserializeObject <List <Session> >(EventsWriterHelper.oldImage);

            eventList.RemoveAt(eventIndex);
            EventsWriterHelper.newImage = JsonConvert.SerializeObject(eventList);
            await EventsWriterHelper.pushChanges();
        }
        public static async Task incrementAttendeeCount()
        {
            var eventList = JsonConvert.DeserializeObject <List <Session> >(EventsWriterHelper.oldImage);

            eventList[0].attendeeCount += 1;
            EventsWriterHelper.newImage = JsonConvert.SerializeObject(eventList);
            await EventsWriterHelper.pushChanges();
        }
        public static async Task addNewEvent(Session newEvent, int index)
        {
            var eventList = JsonConvert.DeserializeObject <List <Session> >(EventsWriterHelper.oldImage);

            eventList.Insert(index, newEvent);
            EventsWriterHelper.newImage = JsonConvert.SerializeObject(eventList);
            await EventsWriterHelper.pushChanges();
        }