Use a more obvious unconventional class name. ExtensionHello looks like a typo.

AD7six · weaverryan · commit 2e0f1560cd2a · 2011-09-14T17:44:03.000-05:00
diff --git a/cookbook/bundles/extension.rst b/cookbook/bundles/extension.rst
@@ -504,7 +504,7 @@ automatically by Symfony2. If not, override the Bundle
 :method:`Symfony\\Component\\HttpKernel\\Bundle\\Bundle::build` method in
 your bundle::
 
-    use Acme\HelloBundle\DependencyInjection\ExtensionHello;
+    use Acme\HelloBundle\DependencyInjection\UnconventionalExtensionClass;
 
     class AcmeHelloBundle extends Bundle
     {
@@ -513,7 +513,7 @@ your bundle::
             parent::build($container);
 
             // register extensions that do not follow the conventions manually
-            $container->registerExtension(new ExtensionHello());
+            $container->registerExtension(new UnconventionalExtensionClass());
         }
     }
 

Original file line number	Diff line number	Diff line change
`@@ -504,7 +504,7 @@ automatically by Symfony2. If not, override the Bundle`
`504`	`504`	:method:`Symfony\\Component\\HttpKernel\\Bundle\\Bundle::build` method in
`505`	`505`	`your bundle::`
`506`	`506`
`507`		`- use Acme\HelloBundle\DependencyInjection\ExtensionHello;`
	`507`	`+ use Acme\HelloBundle\DependencyInjection\UnconventionalExtensionClass;`
`508`	`508`
`509`	`509`	`class AcmeHelloBundle extends Bundle`
`510`	`510`	`{`
`@@ -513,7 +513,7 @@ your bundle::`
`513`	`513`	`parent::build($container);`
`514`	`514`
`515`	`515`	`// register extensions that do not follow the conventions manually`
`516`		`- $container->registerExtension(new ExtensionHello());`
	`516`	`+ $container->registerExtension(new UnconventionalExtensionClass());`
`517`	`517`	`}`
`518`	`518`	`}`
`519`	`519`