Update questionhelper.rst

Author: yceruto

components/console/helpers/questionhelper.rst

@@ -173,6 +173,8 @@ will be autocompleted as the user types::
     public function execute(InputInterface $input, OutputInterface $output)
     {
         // ...
+        $helper = $this->getHelper('question');
+        
         $bundles = array('AcmeDemoBundle', 'AcmeBlogBundle', 'AcmeStoreBundle');
         $question = new Question('Please enter the name of a bundle', 'FooBundle');
         $question->setAutocompleterValues($bundles);
@@ -192,6 +194,8 @@ convenient for passwords::
     public function execute(InputInterface $input, OutputInterface $output)
     {
         // ...
+        $helper = $this->getHelper('question');
+        
         $question = new Question('What is the database password?');
         $question->setHidden(true);
         $question->setHiddenFallback(false);
@@ -225,6 +229,8 @@ method::
     public function execute(InputInterface $input, OutputInterface $output)
     {
         // ...
+        $helper = $this->getHelper('question');
+        
         $question = new Question('Please enter the name of the bundle', 'AppBundle');
         $question->setNormalizer(function ($value) {
             // $value can be null here
@@ -256,6 +262,8 @@ method::
     public function execute(InputInterface $input, OutputInterface $output)
     {
         // ...
+        $helper = $this->getHelper('question');
+
         $question = new Question('Please enter the name of the bundle', 'AcmeDemoBundle');
         $question->setValidator(function ($answer) {
             if (!is_string($answer) || 'Bundle' !== substr($answer, -6)) {