docs: def get_type_admin_session(self):
          """Gets the OsidSession associated with the type admin service.
  
          return: (osid.type.TypeAdminSession) - a TypeAdminSession
          raise:  OperationFailed - unable to complete request
          raise:  Unimplemented - supports_type_admin() is false
          compliance: optional - This method must be implemented if
                      supports_type_admin() is true.
  
          """
          pass
          if not self.supports_type_admin():
              raise Unimplemented()
          try:
              from . import sessions
          except ImportError:
              raise  # OperationFailed()
          try:
              session = sessions.TypeAdminSession()
          except AttributeError:
              raise  # OperationFailed()
          return session