an class="parameter" id="-param-message"><span class="type-annotation"><a href="../dart-core/String-class.html">String</a></span> <span class="parameter-name">message</span>, </span><wbr><span class="parameter" id="-param-length"><span class="type-annotation"><a href="../dart-core/int-class.html">int</a></span> <span class="parameter-name">length</span>]</span><wbr>)</span>
        </dt>
        <dd>
          Creates a new <a href="../dart-core/IndexError-class.html">IndexError</a> stating that <code>inval