         Converts <code>obj</code> to a String by invoking <a href="dart-core/Object/toString.html">Object.toString</a> and
writes the result to <code>this</code>, followed by a newline. <a href="dart-io/IOSink/writeln.html">[...]</a>
                  <div class="features">inherited</div>
</dd>
      </dl>
    </section>

    <section class="summary offset-anchor inherited" id="operators">
      <h2>Operators</h2>
      <dl class="callables">
        <dt id="operator ==" class="callable inherited">
       