@NotNull
  @Override
  public PyFileStub deserialize(@NotNull StubInputStream dataStream, StubElement parentStub) throws IOException {
    List<String> all = readNullableList(dataStream);
    BitSet future_features = readBitSet(dataStream);
    StringRef deprecationMessage = dataStream.readName();
    return new PyFileStubImpl(all, future_features, deprecationMessage);
  }
@NotNull
  @Override
  public PyFileStub deserialize(@NotNull StubInputStream dataStream, StubElement parentStub)