def _visit(self, expression, x, y):
        return self._handle(expression, self._visit_command, x, y)
Simulates a failure in lookup image.
dataset/ETHPy150Open nltk/nltk/nltk/sem/drt.py/DrsDrawer._visit--crossover with--dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/tests/unit/virt/xenapi/stubs.py/stubout_lookup_image