def get_root_rest_element(self):
        return self.poll.assignment
Test contrib.formtools.preview form preview rendering.
dataset/ETHPy150Open OpenSlides/OpenSlides/openslides/assignments/models.py/AssignmentOption.get_root_rest_element--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/formtools/tests/__init__.py/PreviewTests.test_form_preview