code: def query_feature_states_for_default_scope(self, query, user_scope):
          
          route_values = {}
          if user_scope is not None:
              route_values['userScope'] = self._serialize.url('user_scope', user_scope, 'str')
          content = self._serialize.body(query, 'ContributedFeatureStateQuery')
          response = self._send(http_method='POST',
                                location_id='3f810f28-03e2-4239-b0bc-788add3005e5',
                                version='5.0-preview.1',
                                route_values=route_values,
                                content=content)
          return self._deserialize('ContributedFeatureStateQuery', response)
docs: QueryFeatureStatesForDefaultScope.
          [Preview API] Get the states of the specified features for the default scope
          :param :class:`<ContributedFeatureStateQuery> <azure.devops.v5_0.feature_management.models.ContributedFeatureStateQuery>` query: Query describing the features to query.
          :param str user_scope:
          :rtype: :class:`<ContributedFeatureStateQuery> <azure.devops.v5_0.feature_management.models.ContributedFeatureStateQuery>`