f="../../dart-io/IOSink/encoding.html">encoding</a>.</p>
<p>The <a href="../../dart-io/IOSink/encoding.html">encoding</a> does not apply to this method, and the <code>data</code> list is passed
directly to the target consumer as a stream event.</p>
<p>This function must not be called when a stream is currently being added
using <a href="../../dart-io/IOSink/addStream.html">addStream</a>.</p>
<p>This operation is non-blocking. See <a href="../../dart-io/IOSink/flush.html">flush</a> or <a href="../../dart-io/