code: def get_authorizations(self):
          
          # Implemented from template for
          # osid.resource.ResourceLookupSession.get_resources
          # NOTE: This implementation currently ignores plenary view
          collection = JSONClientValidated('authorization',
                                           collection='Authorization',
                                           runtime=self._runtime)
          result = collection.find(self._view_filter()).sort('_id', DESCENDING)
          return objects.AuthorizationList(result, runtime=self._runtime, proxy=self._proxy)
docs: Geta all ``Authorizations``.
  
          In plenary mode, the returned list contains all known
          authorizations or an error results. Otherwise, the returned list
          may contain only those authorizations that are accessible
          through this session.
  
          return: (osid.authorization.AuthorizationList) - a list of
                  ``Authorizations``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          *compliance: mandatory -- This method must be implemented.*