til_arrived_at_end</span><span class="p">()</span>  <span class="c1"># block the code until the robot reaches the end</span>
</pre></div>
</div>
</section>
<section id="end">
<h3>End<a class="headerlink" href="#end" title="Permalink to this heading"></a></h3>
<p>To finish the callback, simply return from the callback’s <code class="docutils literal notranslate"><span class="pre">run()</span></code> method. This callback does not have any cleanup beyond that which is already handled in the <code class="