diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/ModifyServiceDefinitionsPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/ModifyServiceDefinitionsPass.php
index 25614e3..069ccc0 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/ModifyServiceDefinitionsPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/ModifyServiceDefinitionsPass.php
@@ -35,5 +35,4 @@ public function process(ContainerBuilder $container) {
       }
     }
   }
-
 }
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterAccessChecksPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterAccessChecksPass.php
index ae66851..32f3303 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterAccessChecksPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterAccessChecksPass.php
@@ -16,9 +16,7 @@
 class RegisterAccessChecksPass implements CompilerPassInterface {
 
   /**
-   * Implements CompilerPassInterface::process().
-   *
-   * Adds services tagged 'access_check' to the access_manager service.
+   * {@inheritdoc}
    */
   public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('access_manager')) {
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterAuthenticationPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterAuthenticationPass.php
index dd975a9..0f5edad 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterAuthenticationPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterAuthenticationPass.php
@@ -24,17 +24,17 @@ class RegisterAuthenticationPass implements CompilerPassInterface {
    *
    * @see \Drupal\Core\Authentication\AuthenticationManager
    * @see \Drupal\Core\Authentication\AuthenticationProviderInterface
+   *
+   * {@inheritdoc}
    */
   public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('authentication')) {
       return;
     }
-    // Get the authentication manager.
-    $matcher = $container->getDefinition('authentication');
-    // Iterate all autentication providers and add them to the manager.
+    $manager = $container->getDefinition('authentication');
     foreach ($container->findTaggedServiceIds('authentication_provider') as $id => $attributes) {
       $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
-      $matcher->addMethodCall('addProvider', array(
+      $manager->addMethodCall('addProvider', array(
         $id,
         new Reference($id),
         $priority,
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterBreadcrumbBuilderPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterBreadcrumbBuilderPass.php
index 1119989..3ad4c94 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterBreadcrumbBuilderPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterBreadcrumbBuilderPass.php
@@ -12,7 +12,7 @@
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 
 /**
- * Adds services to the breadcrumb_builder service.
+ * Adds services tagged with breadcrumb_builder to the breadcrumb manager service.
  */
 class RegisterBreadcrumbBuilderPass implements CompilerPassInterface {
 
@@ -29,5 +29,4 @@ public function process(ContainerBuilder $container) {
       $manager->addMethodCall('addBuilder', array(new Reference($id), $priority));
     }
   }
-
 }
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterKernelListenersPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterKernelListenersPass.php
index 9601f4d..5bf96d6 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterKernelListenersPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterKernelListenersPass.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\DependencyInjection\Compiler\RegisterKernelListenersPass.
+ * Contains of Drupal\Core\DependencyInjection\Compiler\RegisterKernelListenersPass.
  */
 
 namespace Drupal\Core\DependencyInjection\Compiler;
@@ -11,6 +11,10 @@
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 
 class RegisterKernelListenersPass implements CompilerPassInterface {
+
+  /**
+   * {@inheritdoc}
+   */
   public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('event_dispatcher')) {
       return;
@@ -20,7 +24,7 @@ public function process(ContainerBuilder $container) {
 
     foreach ($container->findTaggedServiceIds('event_subscriber') as $id => $attributes) {
 
-      // We must assume that the class value has been correcly filled, even if the service is created by a factory
+      // We must assume that the class value has been correctly filled, even if the service is created by a factory
       $class = $container->getDefinition($id)->getClass();
 
       $refClass = new \ReflectionClass($class);
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterParamConvertersPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterParamConvertersPass.php
index 1948727..fb5caee 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterParamConvertersPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterParamConvertersPass.php
@@ -9,7 +9,6 @@
 
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
-use Symfony\Component\DependencyInjection\Reference;
 
 /**
  * Registers EntityConverter services with the ParamConverterManager.
@@ -19,14 +18,12 @@ class RegisterParamConvertersPass implements CompilerPassInterface {
   /**
    * Adds services tagged with "paramconverter" to the param converter service.
    *
-   * @param \Symfony\Component\DependencyInjection\ContainerBuilder $container
-   *   The container to process.
+   * {@inheritdoc}
    */
   public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('paramconverter_manager')) {
       return;
     }
-
     $manager = $container->getDefinition('paramconverter_manager');
     foreach ($container->findTaggedServiceIds('paramconverter') as $id => $attributes) {
       $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterPathProcessorsPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterPathProcessorsPass.php
index 70de42d..9032304 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterPathProcessorsPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterPathProcessorsPass.php
@@ -12,15 +12,15 @@
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 
 /**
- * Adds services to the 'path_processor_manager service.
+ * Adds services to the 'path_processor_manager' service.
  */
 class RegisterPathProcessorsPass implements CompilerPassInterface {
 
   /**
-   * Adds services tagged 'path_processor_inbound' to the path processor manager.
+   * Adds services tagged 'path_processor_inbound' and 'path_processor_outbound'
+   * to the path processor manager.
    *
-   * @param \Symfony\Component\DependencyInjection\ContainerBuilder $container
-   *  The container to process.
+   * {@inheritdoc}
    */
   public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('path_processor_manager')) {
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteEnhancersPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteEnhancersPass.php
index 927c6dc..6174f4e 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteEnhancersPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteEnhancersPass.php
@@ -19,14 +19,12 @@ class RegisterRouteEnhancersPass implements CompilerPassInterface {
   /**
    * Adds services tagged with "route_enhancer" to the router.
    *
-   * @param \Symfony\Component\DependencyInjection\ContainerBuilder $container
-   *   The container to process.
+   * {@inheritdoc}
    */
   public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('router.dynamic')) {
       return;
     }
-
     $router = $container->getDefinition('router.dynamic');
     foreach ($container->findTaggedServiceIds('route_enhancer') as $id => $attributes) {
       $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteFiltersPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteFiltersPass.php
index da47fca..1a35593 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteFiltersPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteFiltersPass.php
@@ -12,15 +12,12 @@
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 
 /**
- * Adds services tagged 'router.matcher' to the matcher service.
+ * Adds services tagged 'route_filter' to the matcher service.
  */
 class RegisterRouteFiltersPass implements CompilerPassInterface {
 
   /**
-   * Adds services tagged 'router.matcher' to the matcher service.
-   *
-   * @param \Symfony\Component\DependencyInjection\ContainerBuilder $container
-   *   The container to process.
+   * {@inheritdoc}
    */
   public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('router.matcher')) {
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteProcessorsPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteProcessorsPass.php
index dd95869..eb75e38 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteProcessorsPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteProcessorsPass.php
@@ -30,5 +30,4 @@ public function process(ContainerBuilder $container) {
       $manager->addMethodCall('addOutbound', array(new Reference($id), $priority));
     }
   }
-
 }
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterServicesForDestructionPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterServicesForDestructionPass.php
index ab89658..f495e5c 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterServicesForDestructionPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterServicesForDestructionPass.php
@@ -17,15 +17,13 @@
 class RegisterServicesForDestructionPass implements CompilerPassInterface {
 
   /**
-   * Implements \Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface::process().
+   * {@inheritdoc}
    */
   public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('kernel_destruct_subscriber')) {
       return;
     }
-
     $definition = $container->getDefinition('kernel_destruct_subscriber');
-
     $services = $container->findTaggedServiceIds('needs_destruction');
     foreach ($services as $id => $attributes) {
       $definition->addMethodCall('registerService', array($id));
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterStringTranslatorsPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterStringTranslatorsPass.php
index 39a0764..b893792 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterStringTranslatorsPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterStringTranslatorsPass.php
@@ -23,11 +23,10 @@ public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('string_translation')) {
       return;
     }
-    $access_manager = $container->getDefinition('string_translation');
+    $definition = $container->getDefinition('string_translation');
     foreach ($container->findTaggedServiceIds('string_translator') as $id => $attributes) {
       $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
-      $access_manager->addMethodCall('addTranslator', array(new Reference($id), $priority));
+      $definition->addMethodCall('addTranslator', array(new Reference($id), $priority));
     }
   }
-
 }
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterTwigExtensionsPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterTwigExtensionsPass.php
index 3df9b87..6aa7813 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterTwigExtensionsPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterTwigExtensionsPass.php
@@ -12,25 +12,22 @@
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 
 /**
- * Register additional Twig extensions to the Twig service container.
+ * Register additional Twig extensions with the Twig service container.
  */
 class RegisterTwigExtensionsPass implements CompilerPassInterface {
 
   /**
    * Adds services tagged 'twig.extension' to the Twig service container.
    *
-   * @param \Symfony\Component\DependencyInjection\ContainerBuilder $container
-   *   The container to process.
+   * {@inheritdoc}
    */
   public function process(ContainerBuilder $container) {
     if (!$container->hasDefinition('twig')) {
       return;
     }
-
     $definition = $container->getDefinition('twig');
-
     foreach ($container->findTaggedServiceIds('twig.extension') as $id => $attributes) {
-      // We must assume that the class value has been correcly filled,
+      // We must assume that the class value has been correctly filled,
       // even if the service is created by a factory.
       $class = $container->getDefinition($id)->getClass();
 
@@ -42,5 +39,4 @@ public function process(ContainerBuilder $container) {
       $definition->addMethodCall('addExtension', array(new Reference($id)));
     }
   }
-
 }
diff --git a/core/lib/Drupal/Core/DependencyInjection/Container.php b/core/lib/Drupal/Core/DependencyInjection/Container.php
index 0d4c972..62985aa 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Container.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Container.php
@@ -34,5 +34,4 @@ public function __sleep() {
     trigger_error('The container was serialized.', E_USER_ERROR);
     return array_keys(get_object_vars($this));
   }
-
 }
diff --git a/core/tests/Drupal/Tests/UnitTestCase.php b/core/tests/Drupal/Tests/UnitTestCase.php
index 898f40e..9d1ba85 100644
--- a/core/tests/Drupal/Tests/UnitTestCase.php
+++ b/core/tests/Drupal/Tests/UnitTestCase.php
@@ -10,7 +10,6 @@
 use Drupal\Component\Utility\Random;
 use Drupal\Component\Utility\String;
 use Drupal\Core\Cache\CacheBackendInterface;
-use Drupal\Core\DependencyInjection\ContainerBuilder;
 
 /**
  * Provides a base class and helpers for Drupal unit tests.