n>
    <span class="k">let</span> <span class="nv">id</span><span class="p">:</span> <span class="kt">Int</span>
    <span class="k">let</span> <span class="nv">name</span><span class="p">:</span> <span class="kt">String</span>

    <span class="k">var</span> <span class="nv">differenceIdentifier</span><span class="p">:</span> <span class="kt">Int</span> <span class="p">{</span>
        <span class="k">return</span> <span class="n">id</span>
    <span class="p">}</span>

    <span class="kd">func</span> <sp