.</span><span
            class="n">insert</span><span class="p">(</span><span class="n">where</span><span class="p">,</span> <span
            class="n">priority</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span>

        <span class="n">T_left</span> <span class="o">=</span> <span class="n">s</span><span class="o">.</span><span
            class="n">left</span>
        <span class="n">T_right</span> <span class="o">=</span> <span class="n">s</span><span class="o">.</span><span