def _get_value(self, entity):
    if entity._projection:
      if self._name not in entity._projection:
        raise UnprojectedPropertyError(
            'Property %s is not in the projection' % (self._name,))
    return self._get_user_value(entity)
Internal method to handle NA filling of take
dataset/ETHPy150Open GoogleCloudPlatform/datastore-ndb-python/ndb/model.py/Property._get_value--crossover with--dataset/ETHPy150Open pydata/pandas/pandas/indexes/base.py/Index._assert_take_fillable