if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

      System.out.println("Server: " + response.header("Server"));
      System.out.println("Date: " + response.header("Date"));
      System.out.println("Vary: " + response.headers("Vary"));
    }
  }

  public static void main(String... args) throws Exception {
    new AccessHeaders().run();
  }

  static <T> T reserialize(T object) {
    checkNotNull(object);
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    try {
      ObjectOutputStream out = new ObjectOutputStream(bytes);
      out.writeObject(object);
      ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes.toByteArray()));
      return (T) requireNonNull(in.readObject());
    } catch (IOException | ClassNotFoundException e) {

  static <T> T reserialize(T object) {
    checkNotNull(object);
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    try {
      ObjectOutputStream out = new ObjectOutputStream(bytes);
      out.writeObject(object);
      ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes.toByteArray()));
      return (T) requireNonNull(in.readObject());
    } catch (IOException | ClassNotFoundException e) {

out=$(diff -qpruN expanded_ns.txt decommissioned_ns.txt)
ret=$?
if [ $ret -ne 0 ]; then
	echo "BUG: expected no missing entries after decommission: $out"
	exit 1
fi

out=$(diff -qpruN expanded_ns_versions.txt decommissioned_ns_versions.txt)
ret=$?
if [ $ret -ne 0 ]; then
	echo "BUG: expected no missing entries after decommission: $out"
	exit 1
fi

	if c = d.skipSpaces(); c == ']' {
		goto out
	}

scan:
	if v, err = d.emitAny(); err != nil {
		goto out
	}

	if d.depth > d.emitDepth { // skip alloc for array if it won't be emitted
		array = append(array, v)
	}

	// next token must be ',' or ']'
	switch c = d.skipSpaces(); c {
	case ',':
		d.skipSpaces()
		goto scan
	case ']':
		goto out
	default:

    }
  }

  public void testAsOutputStream() throws Exception {
    PrimitiveSink sink = mock(PrimitiveSink.class);
    OutputStream out = Funnels.asOutputStream(sink);
    byte[] bytes = {1, 2, 3, 4};
    out.write(255);
    out.write(bytes);
    out.write(bytes, 1, 2);
    verify(sink).putByte((byte) 255);
    verify(sink).putBytes(bytes);
    verify(sink).putBytes(bytes, 1, 2);
  }

                                .param("q", "curl4j")
                                .header("Accept", "application/json")
                                .execute()) {
    System.out.println("Status: " + response.getHttpStatusCode());
    System.out.println(response.getContentAsString());
}
```

### Asynchronous request

```java
import org.codelibs.curl.Curl;

Curl.post("https://api.example.com/items")

  }

  @Override
  public OutputStream openStream() throws IOException {
    outputStreamOpened = true;
    bytes.reset(); // truncate
    return new Out();
  }

  private final class Out extends TestOutputStream {

    Out() throws IOException {
      super(bytes, options);
    }

    @Override
    public void close() throws IOException {
      outputStreamClosed = true;
      super.close();

    private final ByteArrayOutputStream out = new ByteArrayOutputStream();

    @Override
    protected void update(byte b) {
      out.write(b);
    }

    @Override
    protected void update(byte[] b, int off, int len) {
      out.write(b, off, len);
    }

    byte[] bytes() {
      return out.toByteArray();
    }

    void assertBytes(byte[] expected) {

      update(len);
      out.write(b, off, len);
    }

    synchronized void close() throws IOException {
      out.close();
    }

    synchronized void flush() throws IOException {
      out.flush();
    }

    /**
     * Checks if writing {@code len} bytes would go over threshold, and switches to file buffering
     * if so.
     */
    @GuardedBy("this")