@Throws(IOException::class)
      fun readByteString(): ByteString {
        val firstByte = readByte()
        val huffmanDecode = firstByte and 0x80 == 0x80 // 1NNNNNNN
        val length = readInt(firstByte, PREFIX_7_BITS).toLong()

        return if (huffmanDecode) {
          val decodeBuffer = Buffer()
          Huffman.decode(source, length, decodeBuffer)
          decodeBuffer.readByteString()

// trees are permitted.
func (h *huffmanDecoder) init(lengths []int) bool {
	// Sanity enables additional runtime tests during Huffman
	// table construction. It's intended to be used during
	// development to supplement the currently ad-hoc unit tests.
	const sanity = false

	if h.min != 0 {
		*h = huffmanDecoder{}
	}

	// Count number of codes of each length,

  }

  @Test
  fun dynamicTableSizeHasAnUpperBound() {
    hpackWriter!!.resizeHeaderTable(1048576)
    assertThat(hpackWriter!!.maxDynamicTableByteCount).isEqualTo(16384)
  }

  @Test
  fun huffmanEncode() {
    hpackWriter = Hpack.Writer(4096, true, bytesOut)
    hpackWriter!!.writeHeaders(headerEntries("foo", "bar"))
    val expected =
      Buffer()
        .writeByte(0x40) // Literal header, new name.