def is_projection(self):
    return self.__projection
If any fields are marked to be deferred, returns a dictionary mapping
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/datastore.py/Entity.is_projection--crossover with--dataset/ETHPy150Open django/django/django/db/models/sql/query.py/Query.get_loaded_field_names