private static QualifiedName extractAttributeQNameFromClassType(String exprName, PyClassType type) {
    final String name = type.getClassQName();
    if (name != null) {
      return QualifiedName.fromDottedString(name).append(exprName);
    }
    return null;
  }
private static QualifiedName extractAttributeQNameFromClassType(String exprName, PyClassType type)