-parameter"><a href="dart-core/String-class.html">String</a></span>&gt;</span></span> <span class="parameter-name">parameters</span></span> ])
    </section>

    <section class="desc markdown">
      <p>Creates a new header value object setting the value and parameters.</p>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <pre class="language-dart"><code class="language-dart">factory HeaderValue([String value = &quot;&quot;, Map&lt;S