@Override public void visitPostfixExpression(@NotNull PsiPostfixExpression expression) {
    startElement(expression);

    PsiExpression operand = PsiUtil.skipParenthesizedExprDown(expression.getOperand());
    if (operand != null) {
      processIncrementDecrement(expression, operand, true);
    } else {
      pushUnknown();
    }

    finishElement(expression);
  }
@Override public void visitPostfixExpression(@NotNull PsiPostfixExpression expression)