 clas, registers a known grammar for use with <code>@import</code> directives.</p>
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  
  <div class="codewrapper">
    <pre><code class="lang-typeScript hljs">/** @virtual */
protected registerKnownGrammarCore(name: string, file: string): void;</code></pre>
  </div>
  
  
  <h5 class="parameters">Parameters</h5>
  <div>
    <div class="property">
      <dl class="parameter">
        <dt>name</dt>
