public void LoadAppointmentsTest()
        {
            var service = ExchangeHelper.GetService(ExchangePass, ExchangeServerUrl, ExchangeLogin);

            DateTime.TryParse("10-Jun-2019", out var start);
            var meeting = AppointmentHelper.GetAppointmentBySubject(service, "Item1", start);

            var appointments = AppointmentHelper.GetAppointmentsById(service, meeting.Id.ToString());

            foreach (var item in appointments)
            {
                Console.WriteLine(item.AppointmentType.ToString());
            }
        }