t = &amp;stdout_writer.interface;</span>
<span id="cb26-5"><a href="#cb26-5" aria-hidden="true" tabindex="-1"></a><span class="kw">fn</span> return_null(n: <span class="dt">i32</span>) ?<span class="dt">i32</span> <span class="op">{</span></span>
<span id="cb26-6"><a href="#cb26-6" aria-hidden="true" tabindex="-1"></a>    <span class="kw">if</span> (n == <span class="dv">5</span>) <span class="kw">return</span> <span class="cn">null</span>;</span>
<span id="cb26-7"><a href="#cb26-7" aria-hidden="true" tabin