How can I retrieve a Crystal Report from BOE repository as rpt file?

BOE (XI Release 2.0) is used to store and manage Webi reports and published reports (Crystal Report). The user can view these reports through the InfoView, he also can edit Webi reports. There is a need to be able to edit CR reports in Crystal Report Designer (XI Release 2.0).

How can I retrieve a Crystal Report from BOE repository as rpt file using .NET BOE SDK? Is it possible?