def generic_visit(self, node):
        for field, value in iter_fields(node):
            if isinstance(value, list):
                for item in value:
                    if isinstance(item, AST):
                        self.visit(item)
            elif isinstance(value, AST):
                self.visit(value)
Test that delete_server wraps novaclient exceptions on wait fails
dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/ast.py/NodeVisitor.generic_visit--crossover with--dataset/ETHPy150Open openstack-infra/shade/shade/tests/unit/test_delete_server.py/TestDeleteServer.test_delete_server_get_fails