"index.html">primary_secondary_progress_bar</a></li>
      <li><a href="dart-core/dart-core-library.html">dart:core</a></li>
      <li class="self-crumb">FallThroughError class</li>
    </ol>
    
    <h5>dart:core library</h5>
    <ol>
      <li class="section-title"><a href="dart-core/dart-core-library.html#classes">Classes</a></li>
      <li><a href="dart-core/BidirectionalIterator-class.html">BidirectionalIterator</a></li>
      <li><a href="dart-core/BigInt-class.html">BigInt</a></li>
      <li><a href