def default_visit(self, node):
        newnode = node.copy()
        self.parent.append(newnode)
        self.parent_stack.append(self.parent)
        self.parent = newnode
Regression test for #10643: the security hash should allow forms with
dataset/ETHPy150Open adieu/allbuttonspressed/docutils/nodes.py/TreeCopyVisitor.default_visit--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.3/django/contrib/formtools/tests/__init__.py/FormHmacTests.test_empty_permitted