*
   * If this does write a value, it will write a tag and a length and a full value.
   */
  fun toDer(
    writer: DerWriter,
    value: T,
  )

  fun toDer(value: T): ByteString {
    val buffer = Buffer()
    val writer = DerWriter(buffer)
    toDer(writer, value)
    return buffer.readByteString()
  }

  /**

        protected boolean isCommit = false;

        /** The temporary file to write changes to. */
        protected File newFile;

        /** The writer for the temporary file. */
        protected Writer writer;

        /** The synonym item being added or updated. */
        protected SynonymItem item;

        /**
         * Constructs a new updater for a synonym item.
         *

    assertEquals(I18N.length(), copied);
  }

  public void testCopy_toWriter_fromReader() throws IOException {
    StringWriter writer = new StringWriter();
    long copied = CharStreams.copy(new StringReader(ASCII), writer);
    assertEquals(ASCII, writer.toString());
    assertEquals(ASCII.length(), copied);

    StringWriter writer2 = new StringWriter();

    assertEquals(I18N.length(), copied);
  }

  public void testCopy_toWriter_fromReader() throws IOException {
    StringWriter writer = new StringWriter();
    long copied = CharStreams.copy(new StringReader(ASCII), writer);
    assertEquals(ASCII, writer.toString());
    assertEquals(ASCII.length(), copied);

    StringWriter writer2 = new StringWriter();

    Reader reader = source.openStream();

    StringWriter writer = new StringWriter();
    char[] buf = new char[64];
    int read;
    while ((read = reader.read(buf)) != -1) {
      writer.write(buf, 0, read);
    }
    reader.close();
    writer.close();

    assertExpectedString(writer.toString());
  }

  public void testOpenBufferedStream() throws IOException {

    assertFalse(source.wasStreamClosed());

    StringWriter writer = new StringWriter();
    char[] buf = new char[64];
    int read;
    while ((read = reader.read(buf)) != -1) {
      writer.write(buf, 0, read);
    }
    reader.close();
    writer.close();

    assertTrue(source.wasStreamClosed());
    assertEquals(STRING, writer.toString());
  }

  public void testLines() throws IOException {

        getProperties().store(out, comments);
    }

    @Override
    public void store(final Writer writer, final String comments) throws IOException {
        getProperties().store(writer, comments);
    }

    @Override
    public void storeToXML(final OutputStream os, final String comment, final String encoding) throws IOException {

    val newMaxFrameSize = 16777215
    val writer = Http2Writer(Buffer(), true)
    writer.applyAndAckSettings(Settings().set(Settings.MAX_FRAME_SIZE, newMaxFrameSize))
    assertThat(writer.maxDataLength()).isEqualTo(newMaxFrameSize)
    writer.frameHeader(0, newMaxFrameSize, Http2.TYPE_DATA, FLAG_NONE)
  }

  @Test fun streamIdHasReservedBit() {
    val writer = Http2Writer(Buffer(), true)

        Exception exception = new Exception() {
            @Override
            public void printStackTrace(java.io.PrintWriter writer) {
                // Simulate a normal stack trace output
                writer.println("Special test exception");
                writer.flush();
            }
        };

        monitorTarget.appendException(buf, exception);

      throws IOException {
    StringWriter writer = new StringWriter();
    try (OutputStream encodingStream = encoding.encodingStream(writer)) {
      encodingStream.write(decoded.getBytes(UTF_8));
    }
    assertThat(writer.toString()).isEqualTo(encoded);
  }

  @GwtIncompatible // Reader
  private static void testStreamingDecodes(BaseEncoding encoding, String encoded, String decoded)
      throws IOException {