@cassiopeia.type.core.common.lazyproperty
    def wards_per_min_deltas(self):
        return ParticipantTimelineData(self.data.wardsPerMinDeltas) if self.data.wardsPerMinDeltas else None
Ensures the generic view returned the page and contains a form.
dataset/ETHPy150Open meraki-analytics/cassiopeia/cassiopeia/type/core/match.py/ParticipantTimeline.wards_per_min_deltas--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/tests/regressiontests/views/tests/generic/create_update.py/CreateObjectTest.test_create_article_display_page