[TwigBundle] use ContainerAwareTrait in commands

I made the class final because it is not meant to be extended. By using the trait, which uses protected visibility for the container property, it would otherwise make the container property part of of BC promise
symfony · nicolas-grekas · Nov 5, 2015 · Nov 28, 2014 · Nov 1, 2015 · Nov 4, 2015
commit 24ff77067962e809d0ca191d92384e8c8a5e2d2c
diff --git a/src/Symfony/Bundle/TwigBundle/Command/DebugCommand.php b/src/Symfony/Bundle/TwigBundle/Command/DebugCommand.php
@@ -12,28 +12,17 @@
 namespace Symfony\Bundle\TwigBundle\Command;

 use Symfony\Bridge\Twig\Command\DebugCommand as BaseDebugCommand;
-use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\DependencyInjection\ContainerAwareInterface;
+use Symfony\Component\DependencyInjection\ContainerAwareTrait;

 /**
 * Lists twig functions, filters, globals and tests present in the current project.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
-class DebugCommand extends BaseDebugCommand implements ContainerAwareInterface
+final class DebugCommand extends BaseDebugCommand implements ContainerAwareInterface
 {
-    /**
-     * @var ContainerInterface|null
-     */
-    private $container;
-
-    /**
-     * {@inheritdoc}
-     */
-    public function setContainer(ContainerInterface $container = null)
-    {
-        $this->container = $container;
-    }
+    use ContainerAwareTrait;

    /**
     * {@inheritdoc}

diff --git a/src/Symfony/Bundle/TwigBundle/Command/LintCommand.php b/src/Symfony/Bundle/TwigBundle/Command/LintCommand.php
@@ -12,8 +12,8 @@
 namespace Symfony\Bundle\TwigBundle\Command;

 use Symfony\Bridge\Twig\Command\LintCommand as BaseLintCommand;
-use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\DependencyInjection\ContainerAwareInterface;
+use Symfony\Component\DependencyInjection\ContainerAwareTrait;
 use Symfony\Component\Finder\Finder;

 /**
@@ -22,20 +22,9 @@
 * @author Marc Weistroff <marc.weistroff@sensiolabs.com>
 * @author Jérôme Tamarelle <jerome@tamarelle.net>
 */
-class LintCommand extends BaseLintCommand implements ContainerAwareInterface
+final class LintCommand extends BaseLintCommand implements ContainerAwareInterface
 {
-    /**
-     * @var ContainerInterface|null
-     */
-    private $container;
-
-    /**
-     * {@inheritdoc}
-     */
-    public function setContainer(ContainerInterface $container = null)
-    {
-        $this->container = $container;
-    }
+    use ContainerAwareTrait;

    /**
     * {@inheritdoc}