@Override
  public void serialize(@NotNull MarkdownHeaderStubElement stub, @NotNull StubOutputStream dataStream) throws IOException {
    writeUTFFast(dataStream, stub.getIndexedName());
    writeUTFFast(dataStream, stub.getIndexedAnchorReference());
  }
@Override
  public void serialize(@NotNull MarkdownHeaderStubElement stub, @NotNull StubOutputStream dataStream)