Calling ExchangeService.GetRoomLists() return empty results

Hi All,

I am developing a sample email client application with the help of EWS Managed API. In my application i need to retrieve all the rooms presented in my organization.

When calling ExchangeService.GetRoomLists() it is giving empty results. ia m using ExchnageServerVersion 2013 sp1.

Can you please help on this?

Thanks

aresh