     </dd>
        <dt id="String.fromEnvironment" class="callable">
          <span class="name"><a href="dart-core/String/String.fromEnvironment.html">String.fromEnvironment</a></span><span class="signature">(<span class="parameter" id="fromEnvironment-param-name"><span class="type-annotation"><a href="dart-core/String-class.html">String</a></span> <span class="parameter-name">name</span>, {</span> <span class="parameter" id="fromEnvironment-param-defaultValue"><span class="type-annotation"><a href="dart-