code: @Override
      public IDocumentQuery<T> spatial(String fieldName, Function<SpatialCriteriaFactory, SpatialCriteria> clause) {
          SpatialCriteria criteria = clause.apply(SpatialCriteriaFactory.INSTANCE);
          _spatial(fieldName, criteria);
          return this;
      }
docs: TBD expr public IDocumentQuery<T> Spatial(Expression<Func<T, object>> path, Func<SpatialCriteriaFactory, SpatialCriteria> clause)