def shapes(self):
        pass
A hook for backend-specific changes required when leaving manual
dataset/ETHPy150Open pycollada/pycollada/collada/primitive.py/BoundPrimitive.shapes--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/db/backends/__init__.py/BaseDatabaseWrapper._leave_transaction_management