nd_delta: The amount of time to add to the end of the range.</span>
<span class="sd">        :type end_delta: TimeDelta</span>
<span class="sd">        :return: The instance with the extended time range.</span>
<span class="sd">        :rtype: self</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_start_time</span> <span class="o">+=</span> <span class="n">start_delta</span>
        <span class="bp">self</span><span class="