def _update_proto(self, proto):
        self.__dict__['_protocol'] = proto
Returns the default version string to use for MSVS.
dataset/ETHPy150Open meejah/txtorcon/txtorcon/torconfig.py/TorConfig._update_proto--crossover with--dataset/ETHPy150Open kayhayen/Nuitka/nuitka/build/inline_copy/lib/scons-2.3.2/SCons/Tool/MSCommon/vs.py/get_default_version