def _compute_r(self, alpha):
        self.r = self.Y - np.dot(self.X, alpha)
testing if set_output method is working properly
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/sandbox/panel/mixed.py/Unit._compute_r--crossover with--dataset/ETHPy150Open eoyilmaz/anima/tests/previs/test_shot_extension.py/ShotExtensionTestCase.test_set_output_is_working_properly