@Override
  protected @Nullable Object evaluateBinary(@NotNull PyBinaryExpression expression) {
    final PyElementType operator = expression.getOperator();
    if (operator == PyTokenTypes.DIV) {
      final Object lhs = evaluate(expression.getLeftExpression());
      final Object rhs = evaluate(expression.getRightExpression());
      if (lhs instanceof String && rhs instanceof String) {
        return FileUtil.toSystemIndependentName(Paths.get((String)lhs, (String)rhs).toFile().getPath());
      }
    }
    return super.evaluateBinary(expression);
  }
@Override
  protected @Nullable Object evaluateBinary(@NotNull PyBinaryExpression expression)