Gets the property value of the client appointment corresponding to the Appointment.RecurrenceInfo appointment property.
An ASPxClientRecurrenceInfo object representing the recurrence information.
Use the ASPxClientAppointment.SetRecurrenceInfo method to set information on recurrence
for the client appointment.
Handle the ASPxScheduler.InitClientAppointment event to pass an appointment property value from a server to a client (except the ID, Start and End properties). Otherwise, the client property returns null.