private static boolean isPassOrRaiseOrEmptyReturnOrEllipsis(PyStatement stmt) {
    if (stmt instanceof PyPassStatement || stmt instanceof PyRaiseStatement) {
      return true;
    }
    if (stmt instanceof PyReturnStatement && ((PyReturnStatement)stmt).getExpression() == null) {
      return true;
    }
    if (stmt instanceof PyExpressionStatement) {
      final PyExpression expression = ((PyExpressionStatement)stmt).getExpression();
      if (expression instanceof PyNoneLiteralExpression && ((PyNoneLiteralExpression)expression).isEllipsis()) {
        return true;
      }
    }
    return false;
  }
private static boolean isPassOrRaiseOrEmptyReturnOrEllipsis(PyStatement stmt)