def set_default_type(self, ctype):
        self._default_type = ctype
This just checks that IPYSERVER is unset. 
dataset/ETHPy150Open babble/babble/include/jython/Lib/email/message.py/Message.set_default_type--crossover with--dataset/ETHPy150Open mattfoster/ipython-tmbundle/Tests/test_ipythonClient.py/TestCheckServer.test_check_unset_server