pan><span class="kt">Element</span><span class="p">,</span> <span class="kt">I6</span><span class="o">.</span><span class="kt">Element</span><span class="p">,</span> <span class="kt">I7</span><span class="o">.</span><span class="kt">Element</span><span class="p">)</span> <span class="k">throws</span> <span class="o">-&gt;</span> <span class="kt">Element</span><span class="p">)</span>
        <span class="o">-&gt;</span> <span class="kt">Infallible</span><span class="o">&lt;</span><span class="kt">Element</s