/// <inheritdoc />
protected override void Execute(CodeActivityContext context)
{
var service = ExchangeHelper.GetService(
context.GetValue(OrganizerPassword),
context.GetValue(ExchangeUrl),
context.GetValue(OrganizerEmail));
// GetMaster Item
// Bind to all RequiredAttendees.
var meeting = Appointment.Bind(service, new ItemId(context.GetValue(AppointmentId)), AppointmentHelper.GetAttendeesPropertySet());
AppointmentHelper.UpdateAttendees(meeting, context.GetValue(RequiredAttendees), context.GetValue(OptionalAttendees));
// Save and Send Updates
meeting.Update(ConflictResolutionMode.AlwaysOverwrite, SendInvitationsOrCancellationsMode.SendOnlyToChanged);
}