def eraseToLineBeginning():
cover when onLeave called after we have a valid session
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/conch/insults/insults.py/ITerminalTransport.eraseToLineBeginning--crossover with--dataset/ETHPy150Open crossbario/autobahn-python/autobahn/wamp/test/test_user_handler_errors.py/TestSessionCallbacks.test_on_leave_valid_session