@Override
  public void serialize(@NotNull PyFileStub stub, @NotNull StubOutputStream dataStream) throws IOException {
    writeNullableList(dataStream, stub.getDunderAll());
    writeBitSet(dataStream, stub.getFutureFeatures());
    dataStream.writeName(stub.getDeprecationMessage());
  }
@Override
  public void serialize(@NotNull PyFileStub stub, @NotNull StubOutputStream dataStream)