@dispatch(Expr, object)
def optimize(expr, data):
    return expr
Check that L{ProxyClientFactory.clientConnectionFailed} produces
dataset/ETHPy150Open blaze/blaze/blaze/compute/core.py/optimize--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/web/test/test_proxy.py/ProxyClientFactoryTestCase.test_connectionFailed