How To Access System Folders From EWS Managed API

The EWS Managed API provides a simple way to get to the Public Folders – you simply bind to the Microsoft.Exchange.WebServices.Data.WellKnownFolderName.PublicFoldersRoot, like so: $pfRootName = [Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::PublicFoldersRoot $pfRoot = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($service, $pfRootName) But what if you want to access the Free Busy folder, or the Offline Address Book folders? How do you get to the System Folders?…