s non-blocking. See <a href="dart-io/Stdout/flush.html">flush</a> or <a href="dart-io/Stdout/done.html">done</a> for how to get any
errors generated by this call.</p>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <pre class="language-dart"><code class="language-dart">void addError(error, [StackTrace stackTrace]) {
  _sink.addError(error, stackTrace);
}</code></pre>
    </section>

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