   <section class="summary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <pre class="language-dart"><code class="language-dart">ByteConversionSink startChunkedConversion(Sink&lt;String&gt; sink) {
  StringConversionSink stringSink;
  if (sink is StringConversionSink) {
    stringSink = sink;
  } else {
    stringSink = StringConversionSink.from(sink);
  }
  return stringSink.asUtf8Sink(_allowMalformed);
}</code></pre>
    </section>

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