def pre_order(self):
        raise NotImplementedError
Get the feature metadata which will be used for the GeoJSON
dataset/ETHPy150Open ctxis/canape/CANAPE.Scripting/Lib/lib2to3/pytree.py/Base.pre_order--crossover with--dataset/ETHPy150Open djangonauts/django-rest-framework-gis/rest_framework_gis/serializers.py/GeoFeatureModelSerializer.get_properties