merged branch lsmith77/container_builder_cosmetics (PR #5163)

Commits
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3605c54 removed unused private property
d4a78a2 fix phpdoc statement of getAlias()

Discussion
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Container builder cosmetics

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by travisbot at 2012-08-03T08:39:00Z

This pull request [passes](http://travis-ci.org/symfony/symfony/builds/2026569) (merged 3605c54f into 13c60bde).

src/Symfony/Component/DependencyInjection/ContainerBuilder.php

@@ -33,7 +33,6 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
     private $aliases          = array();
     private $resources        = array();
     private $extensionConfigs = array();
-    private $injectors        = array();
     private $compiler;
 
     /**
@@ -548,7 +547,7 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
      *
      * @param string $id The service identifier
      *
-     * @return string The aliased service identifier
+     * @return Definition A Definition instance
      *
      * @throws \InvalidArgumentException if the alias does not exist
      *