*
   * <p>The {@code close} and {@code flush} methods of the returned {@code OutputStream} do nothing,
   * and no method throws {@code IOException}.
   *
   * @since 13.0
   */
  public static OutputStream asOutputStream(PrimitiveSink sink) {
    return new SinkAsStream(sink);
  }

  private static final class SinkAsStream extends OutputStream {
    final PrimitiveSink sink;

    SinkAsStream(PrimitiveSink sink) {

   *
   * <p>The {@code close} and {@code flush} methods of the returned {@code OutputStream} do nothing,
   * and no method throws {@code IOException}.
   *
   * @since 13.0
   */
  public static OutputStream asOutputStream(PrimitiveSink sink) {
    return new SinkAsStream(sink);
  }

  private static final class SinkAsStream extends OutputStream {
    final PrimitiveSink sink;

    SinkAsStream(PrimitiveSink sink) {

   * @throws IOException if an I/O error occurs while reading from this source
   */
  public HashCode hash(HashFunction hashFunction) throws IOException {
    Hasher hasher = hashFunction.newHasher();
    copyTo(Funnels.asOutputStream(hasher));
    return hasher.hash();
  }

  /**
   * Checks that the contents of this byte source are equal to the contents of the given byte
   * source.
   *