lass="bp">self</span><span class="o">.</span><span class="n">reset</span><span class="p">(</span><span class="n">session</span><span class="p">)</span>
        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">container</span><span class="p">[</span><span class="n">domain</span><span class="p">]</span>

    <span class="k">def</span> <span class="nf">append</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sessi