m">
<div class="tmd-usual">
values of the type denoted by <code class="tmd-code-span">S2</code> must be explicitly converted to type <code class="tmd-code-span">S1</code>, and vice versa.
</div>
</li>
<li class="tmd-list-item">
<div class="tmd-usual">
values of type <code class="tmd-code-span">S3</code> must be explicitly converted to type <code class="tmd-code-span">S4</code>, and vice versa.
</div>
</li>
</ul>
<p></p>
<pre class="tmd-code line-numbers">
<code class="language-go">package main

type S0 stru