error messages.
For example, the <a href="dart-core/String/contains.html">String.contains</a> method will use a <a href="dart-core/RangeError-class.html">RangeError</a>
if its <code>startIndex</code> isn't in the range <code>0..length</code>,
which is easily created by <code>new RangeError.range(startIndex, 0, length)</code>.</p>
    </section>
    
    <section>
      <dl class="dl-horizontal">



        <dt>Implementers</dt>
        <dd><ul class="comma-separated clazz-relationships">
          <li><a hr