Cloud Storage and Shared Items

Using Delphi XE5
On page 33 of the Developers Guide PDF it shows TCloudItem.Shared property (boolean), but I'm not seeing that in my code completion or compilation. What's up with that? (Dropbox/SkyDrive/Box)

Cast the item to either TGDriveItem (Google Drive) or TSkyDriveItem (Windows One Drive)

DropBox and Box.NET do not have this.