def stop(self):
        self._stop = True
        self.workflow.stop()
Create a PGMultinomial distribution with mean and covariance for psi.
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.main/src/openmdao/main/driver.py/Driver.stop--crossover with--dataset/ETHPy150Open HIPS/pgmult/pgmult/distributions.py/PGLogisticNormalMultinomial.__init__