def tty_signal_keys(self, *args, **vargs):
        pass
Tests checking lambda function existence when the lambda function does not exist
dataset/ETHPy150Open AnyMesh/anyMesh-Python/example/urwid/web_display.py/Screen.tty_signal_keys--crossover with--dataset/ETHPy150Open saltstack/salt/tests/unit/modules/boto_lambda_test.py/BotoLambdaFunctionTestCase.test_that_when_checking_if_a_function_exists_and_a_function_does_not_exist_the_function_exists_method_returns_false