an class="o">.</span><span class="n">plot</span><span class="p">(</span>
                    <span class="bp">self</span><span class="o">.</span><span class="n">branch_values_</span><span class="p">,</span>
                    <span class="bp">self</span><span class="o">.</span><span class="n">expected_values_</span><span class="p">[</span><span class="n">branch_name</span><span class="p">],</span>
                    <span class="n">fmt</span><span class="p">,</span>
                    <span class="n">lab