@cache_readonly
    def resid(self):
        """
        Returns the residuals, the endogeneous data minus the fitted
        values from the model.
        """
        return self.fittedvalues - self.model.endog
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/genmod/generalized_estimating_equations.py/GEEResults.resid/swapped operands of `-`