e></pre><p>Then, Hugo adds the appropriate highlighting:</p><pre><code class=language-go data-expandlinks=true data-repo=istio>func HelloWorld() {
  fmt.Println(&#34;Hello World&#34;)
}
</code></pre><h3 id=supported-syntax>Supported syntax</h3><p>Code blocks in Istio support the following languages with syntax highlighting:</p><ul><li><code>plain</code></li><li><code>markdown</code></li><li><code>yaml</code></li><li><code>json</code></li><li><code>java</code></li><li><code>javascript</code></li><li><code>c<