def execute(self):

        x = self.x
        y = self.y

        self.f_xy = (x-3.0)**2 + x*y + (y+4.0)**2 - 3.0
If an ``X-If-Configuration-Matches`` header is sent with a
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.lib/src/openmdao/lib/casehandlers/test/test_json_filevar.py/Paraboloid.execute--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/control/test/test_httpapi.py/CreateDatasetTestsMixin.test_if_matches_failure