def is_reverse_o2o(field):
    return field.is_relation and field.one_to_one and not field.concrete
Create or updates the ACL entry on an existing document.
dataset/ETHPy150Open django/django/django/db/models/sql/query.py/is_reverse_o2o--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-build/python-libs/gdata/samples/docs/docs_example.py/DocsSample._ModifyAclPermissions