symfony/symfony-docs — pull request #3952 by eko (2014-06-13 22:56:10+00:00)
Title: [Console] Fix Console QuestionHelper $app to $this

On `QuestionHelper` page, commands examples for calling `getHelperSet` use the following (where $app is undefined):

```php
$app->getHelperSet()->get('question');
```

I've changed it to correct:

```php
$this->getHelperSet()->get('question');
```