@Override
  public void serialize(@NotNull PyFromImportStatementStub stub, @NotNull StubOutputStream dataStream) throws IOException {
    final QualifiedName qName = stub.getImportSourceQName();
    QualifiedName.serialize(qName, dataStream);
    dataStream.writeBoolean(stub.isStarImport());
    dataStream.writeVarInt(stub.getRelativeLevel());
  }
@Override
  public void serialize(@NotNull PyFromImportStatementStub stub, @NotNull StubOutputStream dataStream)