angular-cn/aio/tools/transforms/templates/includes/_selectors.html

{%- if doc.directiveOptions.selector.split(',').length %}
<section class="selectors api-section">
  <div class="api-section-header">
    <h2>Selectors</h2>
  </div>
  <div class="api-section-content">
    {% for selector in doc.directiveOptions.selector.split(',') %}
    <p class="selector">
      <code>{$ selector $}</code>
    </p>
    {% endfor %}
  </div>
</section>
{% endif %}