StringBuilder builder = new StringBuilder();

    assertEquals(expected.length(), source.copyTo(builder));

    assertExpectedString(builder.toString());
  }

  public void testCopyTo_charSink() throws IOException {
    TestCharSink sink = new TestCharSink();

    assertEquals(expected.length(), source.copyTo(sink));

    assertExpectedString(sink.getString());
  }

          }

          // The buffer has the data we need. Read from there and return immediately.
          val bytesToRead = minOf(byteCount, upstreamPos - sourcePos)
          buffer.copyTo(sink, sourcePos - bufferPos, bytesToRead)
          sourcePos += bytesToRead
          return bytesToRead
        }

      // Read from the file.
      if (source == SOURCE_FILE) {

   * @deprecated Prefer {@code asCharSource(from, charset).copyTo(to)}.
   */
  @Deprecated
  @InlineMe(
      replacement = "Files.asCharSource(from, charset).copyTo(to)",
      imports = "com.google.common.io.Files")
  public
  static void copy(File from, Charset charset, Appendable to) throws IOException {
    asCharSource(from, charset).copyTo(to);
  }

  /**

 * signatures.
 */
fun Buffer.isProbablyUtf8(): Boolean {
  try {
    val prefix = Buffer()
    val byteCount = size.coerceAtMost(64)
    copyTo(prefix, 0, byteCount)
    for (i in 0 until 16) {
      if (prefix.exhausted()) {
        break
      }
      val codePoint = prefix.readUtf8CodePoint()

   *
   * @return the number of bytes copied
   * @throws IOException if an I/O error occurs while reading from this source or writing to {@code
   *     output}
   */
  @CanIgnoreReturnValue
  public long copyTo(OutputStream output) throws IOException {
    checkNotNull(output);

    Closer closer = Closer.create();
    try {
      InputStream in = closer.register(openStream());
      return ByteStreams.copy(in, output);

          nameBuf.writeByte(utf8ByteCount.toInt())
          nameBuf.writeUtf8(label)
        }
        nameBuf.writeByte(0) // end

        nameBuf.copyTo(this, 0, nameBuf.size)
        writeShort(type)
        writeShort(1) // CLASS_IN
      }.readByteString()

  @Throws(Exception::class)
  fun decodeAnswers(
    hostname: String,
    byteString: ByteString,

   * @deprecated Prefer {@code asCharSource(from, charset).copyTo(to)}.
   */
  @Deprecated
  @InlineMe(
      replacement = "Files.asCharSource(from, charset).copyTo(to)",
      imports = "com.google.common.io.Files")
  public
  static void copy(File from, Charset charset, Appendable to) throws IOException {
    asCharSource(from, charset).copyTo(to);
  }

  /**

    val keyStore = newEmptyKeyStore(keyStoreType)
    if (heldCertificate != null) {
      val chain = arrayOfNulls<Certificate>(1 + intermediates.size)
      chain[0] = heldCertificate.certificate
      intermediates.copyInto(chain, 1)
      keyStore.setKeyEntry("private", heldCertificate.keyPair.private, password, chain)
    }

    // https://github.com/bcgit/bc-java/issues/1160
    val isBouncyCastle = keyStore.provider.name == "BC"

   * @param from the URL to read from
   * @param to the output stream
   * @throws IOException if an I/O error occurs
   */
  public static void copy(URL from, OutputStream to) throws IOException {
    asByteSource(from).copyTo(to);
  }

  /**
   * Returns a {@code URL} pointing to {@code resourceName} if the resource is found using the
   * {@linkplain Thread#getContextClassLoader() context class loader}. In simple environments, the

      assertSame(valueOne, copyOne.getValue());

      InternalEntry<Object, Object, ?> copyTwo = segment.copyForTesting(entryTwo, copyOne);
      assertSame(keyTwo, copyTwo.getKey());
      assertEquals(hashTwo, copyTwo.getHash());
      assertSame(copyOne, copyTwo.getNext());
      assertSame(valueTwo, copyTwo.getValue());
    }
  }

  public void testSegmentGetAndContains() {