old_contents: from sfa.generic import Generic
  
  class dummy (Generic):
      
      # the importer class
      def importer_class (self): 
          import sfa.importer.dummyimporter
          return sfa.importer.dummyimporter.DummyImporter
          
      # use the standard api class
      def api_class (self):
          import sfa.server.sfaapi
          return sfa.server.sfaapi.SfaApi
  
      # the manager classes for the server-side services
      def registry_manager_class (self) : 
          import sfa.managers.registry_manager
          return sfa.managers.registry_manager.RegistryManager
      def slicemgr_manager_class (self) : 
          import sfa.managers.slice_manager
          return sfa.managers.slice_manager.SliceManager
      def aggregate_manager_class (self) :
          import sfa.managers.aggregate_manager
          return sfa.managers.aggregate_manager.AggregateManager
  
      # driver class for server-side services, talk to the whole testbed
      def driver_class (self):
          import sfa.managers.v2_to_v3_adapter
          return sfa.managers.v2_to_v3_adapter.V2ToV3Adapter
  
  
new_contents: from sfa.generic import Generic
  
  class dummy (Generic):
      
      # the importer class
      def importer_class (self): 
          import sfa.importer.dummyimporter
          return sfa.importer.dummyimporter.DummyImporter
          
      # use the standard api class
      def api_class (self):
          import sfa.server.sfaapi
          return sfa.server.sfaapi.SfaApi
  
      # the manager classes for the server-side services
      def registry_manager_class (self) : 
          import sfa.managers.registry_manager
          return sfa.managers.registry_manager.RegistryManager
      def slicemgr_manager_class (self) : 
          import sfa.managers.slice_manager
          return sfa.managers.slice_manager.SliceManager
      def aggregate_manager_class (self) :
          import sfa.managers.aggregate_manager
          return sfa.managers.aggregate_manager.AggregateManager
  
      # driver class for server-side services, talk to the whole testbed
      def driver_class (self):
          import sfa.dummy.dummydriver
          return sfa.dummy.dummydriver.DummyDriver
  
  
subject: Unplug v2_to_v3 adapter from the dummy driver, since dummy driver is a native v3 driver