def _get_method(self, request, action, content_type, body):
        """Look up the action-specific method and its extensions."""
        # Look up the method
        try:
            if not self.controller:
                meth = getattr(self, action)
            else:
                meth = getattr(self.controller, action)
        except AttributeError:
            if (not self.wsgi_actions or
                    _ROUTES_METHODS + ['action'] not in action):
                # Propagate the error
                raise
        else:
            return meth, self.wsgi_extensions.get(action, [])

        if action == 'action':
            action_name = action_peek(body)
        else:
            action_name = action

        # Look up the action method
        return (self.wsgi_actions[action_name],
                self.wsgi_action_extensions.get(action_name, []))
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/api/openstack/wsgi.py/Resource._get_method/swapped operands of `not in`