lass="o">=</span> <span class="n">estimator</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">order</span> <span class="o">=</span> <span class="n">order</span></div>

    <span class="k">def</span> <span class="nf">_fit</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">X</span><span class="p">:</span> <span class="n">Data</span><span class="p">,</span> <span class="n">y</span><span class="p">:</span> <span class="n">Data</spa