s=language-yaml data-expandlinks=true data-repo=istio>destination_service: destination.service.host
response_code: response.code
destination_version: destination.labels[&#34;version&#34;] | &#34;unknown&#34;
</code></pre><p>冒号右侧的序列是属性表达的最简单形式。前两个仅由属性名称组成。<code>response_code</code> 标签由 <code>response.code</code> 属性分配值。</p><p>这是一个条件表达式的示例：</p><pre><code class=language-yaml data-expandlinks=true data-repo=