@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    if (!super.equals(o)) return false;

    final PyCollectionTypeImpl that = (PyCollectionTypeImpl)o;

    if (!myElementTypes.equals(that.myElementTypes)) return false;

    return true;
  }
@Override
  public boolean equals(Object o)