private final DataInputStream dis;
    private final int size;

    /**
     * Constructs a PAC data input stream from the given input stream.
     * @param in the underlying input stream
     * @throws IOException if an I/O error occurs
     */
    public PacDataInputStream(final InputStream in) throws IOException {
        this.dis = new DataInputStream(in);
        this.size = in.available();
    }

    /**

    assertThat(source.readByte() and 0xff).isEqualTo(0xbf)
    assertThat(source.readUtf8()).isEqualTo("hello")
  }

  @Test
  fun bytesEmpty() {
    val body = body("")
    assertThat(body.bytes().size).isEqualTo(0)
  }

  @Test
  fun bytesSeesBom() {
    val body = body("efbbbf68656c6c6f")
    val bytes = body.bytes()
    assertThat(bytes[0] and 0xff).isEqualTo(0xef)

        this.filterCacheExpireAfterWrite = filterCacheExpireAfterWrite;
    }

    /**
     * Sets the maximum load size for the cache.
     * @param maxLoadSize The maximum load size.
     */
    public void setMaxLoadSize(final int maxLoadSize) {
        this.maxLoadSize = maxLoadSize;
    }

        assertEquals(1, builder.initialSettings.size());
        assertEquals("value1", builder.initialSettings.get("key1"));

        // Test adding multiple settings
        builder.addInitialSettings("key2", 100);
        builder.addInitialSettings("key3", true);
        assertEquals(3, builder.initialSettings.size());
        assertEquals("value1", builder.initialSettings.get("key1"));

        i += 12;
        if (len != 0) {
            len--;
            final int size = len * 2;
            try {
                if (size < 0 || size > 0xFFFF) {
                    throw new NdrException(NdrException.INVALID_CONFORMANCE);
                }
                val = new String(buf, i, size, "UTF-16LE");
                i += size + 2;
            } catch (final UnsupportedEncodingException uee) {}
        }

    promisedStreamId: Int,
    requestHeaders: List<Header>,
  ) {
    withLock {
      if (closed) throw IOException("closed")
      hpackWriter.writeHeaders(requestHeaders)

      val byteCount = hpackBuffer.size
      val length = minOf(maxFrameSize - 4L, byteCount).toInt()
      frameHeader(
        streamId = streamId,
        length = length + 4,
        type = TYPE_PUSH_PROMISE,

  /** Constructor for use by subclasses. */
  protected ForwardingMap() {}

  @Override
  protected abstract Map<K, V> delegate();

  @Override
  public int size() {
    return delegate().size();
  }

  @Override
  public boolean isEmpty() {
    return delegate().isEmpty();
  }

  @CanIgnoreReturnValue
  @Override
  public @Nullable V remove(@Nullable Object key) {

  private static final int ENDPOINT = -2;

  /**
   * Contains the link pointers corresponding with the entries, in the range of [0, size()). The
   * high 32 bits of each long is the "prev" pointer, whereas the low 32 bits is the "succ" pointer
   * (pointing to the next entry in the linked list). The pointers in [size(), entries.length) are
   * all "null" (UNSET).
   *

import jakarta.validation.constraints.Size;

/**
 * Form class for thumbnail request parameters.
 * Contains the document ID and query parameters needed to retrieve thumbnail images.
 */
public class ThumbnailForm {

    /**
     * The document ID for which to retrieve the thumbnail.
     */
    @Required
    @Size(max = 100)
    public String docId;

    /**

data class Header(
  /** Name in case-insensitive ASCII encoding. */
  @JvmField val name: ByteString,
  /** Value in UTF-8 encoding. */
  @JvmField val value: ByteString,
) {
  @JvmField val hpackSize = 32 + name.size + value.size

  // TODO: search for toLowerCase and consider moving logic here.
  constructor(name: String, value: String) : this(name.encodeUtf8(), value.encodeUtf8())