startChunkedConversion method Null safety

ByteConversionSink startChunkedConversion(
  1. Sink<List<int>> sink

Start a chunked conversion using the options given to the ZLibEncoder constructor.

Accepts any Sink<List<int>>, but prefers a ByteConversionSink, and converts any other sink to a ByteConversionSink before using it.


ByteConversionSink startChunkedConversion(Sink<List<int>> sink) {
  if (sink is! ByteConversionSink) {
    sink = new ByteConversionSink.from(sink);
  return new _ZLibEncoderSink._(
      sink, gzip, level, windowBits, memLevel, strategy, dictionary, raw);