<pre class="rust item-decl"><code>pub union Union&lt;'a, B&gt;<div class="where">where
    B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;<a class="primitive" href="{{channel}}/std/primitive.unit.html">()</a>&gt; + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</div>{
    <span class="comment">/* private fields */</span>
}</code></pre>