      <span class="k">let</span> <span class="nv">user</span> <span class="o">=</span> <span class="k">try</span><span class="p">?</span> <span class="nv">$0</span><span class="o">.</span><span class="nf">get</span><span class="p">()</span> <span class="c1">// here the user is a custom User type.</span>
            <span class="nf">print</span><span class="p">(</span><span class="n">user</span><span class="p">?</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="c1