t one object. It is
an error to invoke <code>add</code> more than once on the returned sink.</p>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <pre class="language-dart"><code class="language-dart">ChunkedConversionSink&lt;Object&gt; startChunkedConversion(Sink&lt;String&gt; sink) {
  if (sink is _Utf8EncoderSink) {
    return _JsonUtf8EncoderSink(
        sink._sink,
        _toEncodable,
        JsonUtf8Encoder._utf8Encode(indent