@Override
  public void indexStub(@NotNull final PyDecoratorStub stub, @NotNull final IndexSink sink) {
    // Index decorators stub by name (todo: index by FQDN as well!)
    final QualifiedName qualifiedName = stub.getQualifiedName();
    if (qualifiedName != null) {
      sink.occurrence(PyDecoratorStubIndex.KEY, qualifiedName.toString());
    }
  }
@Override
  public void indexStub(@NotNull final PyDecoratorStub stub, @NotNull final IndexSink sink)