><span class="o">.</span><span class="n">fit</span><span class="p">()</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">fitted_values_</span> <span class="o">=</span> <span class="n">estimator_fitted</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">arma_</span><span class="o">.</span><span class="n">fittedvalues</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">resid_</span> <span class="o">=