metadata: ByteString?,
  ) {
    val source = file.source().buffer()
    assertThat(source.readByteString(prefix.size.toLong())).isEqualTo(prefix)
    assertThat(source.readLong()).isEqualTo(upstreamSize)
    assertThat(source.readLong()).isEqualTo(metadataSize.toLong())
    if (upstream != null) {
      assertThat(source.readUtf8(upstreamSize)).isEqualTo(upstream)
    }
    if (metadata != null) {

   * Reads a {@code long} as specified by {@link DataInputStream#readLong()}, except using
   * little-endian byte order.
   *
   * @return the next eight bytes of the input stream, interpreted as a {@code long} in
   *     little-endian byte order
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue // to skip some bytes
  @Override
  public long readLong() throws IOException {
    byte b1 = readAndCheckByte();

     * @return the long value in little-endian format
     * @throws IOException if an I/O error occurs
     */
    public long readLong() throws IOException {
        align(8);
        return Long.reverseBytes(this.dis.readLong());
    }

    /**
     * Reads an unsigned byte value.
     * @return the unsigned byte value as an integer
     * @throws IOException if an I/O error occurs

      val prefix = header.readByteString(PREFIX_CLEAN.size.toLong())
      if (prefix != PREFIX_CLEAN) throw IOException("unreadable cache file")
      val upstreamSize = header.readLong()
      val metadataSize = header.readLong()

      // Read the metadata.
      val metadataBuffer = Buffer()
      fileOperator.read(FILE_HEADER_SIZE + upstreamSize, metadataBuffer, metadataSize)

    s.writeLong(sum());
  }

  private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
    s.defaultReadObject();
    busy = 0;
    cells = null;
    base = s.readLong();
  }

  @Override
  char readChar();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  int readInt();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  long readLong();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  float readFloat();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  double readDouble();

    assertEquals('\u6100', in.readChar());
    assertEquals(-12150, in.readShort());
    assertEquals(20675, in.readUnsignedShort());
    assertEquals(0xBEBAFECA, in.readInt());
    assertEquals(0xBEBAFECAEFBEADDEL, in.readLong());
    assertEquals("Herby Derby", in.readUTF());
    assertEquals(0xBEBAFECA, Float.floatToIntBits(in.readFloat()));
    assertEquals(0xBEBAFECAEFBEADDEL, Double.doubleToLongBits(in.readDouble()));
  }

                int bufferType = pacStream.readInt();
                int bufferSize = pacStream.readInt();
                long bufferOffset = pacStream.readLong();

                if (bufferOffset % 8 != 0) {
                    throw new PACDecodingException("Unaligned buffer " + bufferType);
                }

                byte[] bufferData = new byte[bufferSize];

      )
    }

    // Get frame length, optionally reading from follow-up bytes if indicated by special values.
    frameLength = (b1 and B1_MASK_LENGTH).toLong()
    if (frameLength == PAYLOAD_SHORT.toLong()) {
      frameLength = (source.readShort() and 0xffff).toLong() // Value is unsigned.
    } else if (frameLength == PAYLOAD_LONG.toLong()) {
      frameLength = source.readLong()
      if (frameLength < 0L) {

        if (read(tmp, 0, 4) < 0) {
            throw new SmbException("EOF");
        }
        return Encdec.dec_uint32be(tmp, 0);
    }

    @Override
    public final long readLong() throws SmbException {
        if (read(tmp, 0, 8) < 0) {
            throw new SmbException("EOF");
        }
        return Encdec.dec_uint64be(tmp, 0);
    }

    @Override