def dedent(self):
    self.body.append('__dedent')
Like L{_cancelConnectTest}, but for the case where the L{Deferred} is
dataset/ETHPy150Open hiranya911/rest-coder/python-lib/codegen_core.py/Method.dedent--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/internet/test/test_protocol.py/ClientCreatorTests._cancelConnectFailedTimeoutTest