>    <span class="k">def</span> <span class="nf">plotGraphs</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
        
        <span class="n">itemFrequencies</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getFrequenciesInRange</span><span class="p">()</span>
        <span class="n">transactionLength</span> <span class="o">=</span> <span clas