def test_interface(self):
        form = data_form.Form('submit')
        verify.verifyObject(IIterableMapping, form)
We can update multiple objects at once.
dataset/ETHPy150Open ralphm/wokkel/wokkel/test/test_data_form.py/FormTest.test_interface--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/tests/modeltests/update/tests.py/AdvancedTests.test_update_multiple_objects