@property
    def H_theta(self):
        if self._H_theta is None:
            self._H_theta = H(self.theta.T)
        return self._H_theta
L{Action.addSuccessFields} is the same as L{Action.add_success_fields}.
dataset/ETHPy150Open inpho/vsm/vsm/viewer/ldacgsviewer.py/LdaCgsViewer.H_theta--crossover with--dataset/ETHPy150Open ClusterHQ/eliot/eliot/tests/test_action.py/PEP8Tests.test_add_success_fields