def _info(self, connection, where, ret):
        if where & self.SSL_CB_HANDSHAKE_DONE:
            self._finished.callback(None)
This is the "info callback" on the context.  It will be called
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/protocols/test/test_tls.py/HandshakeCallbackContextFactory._info