diff --git a/src/Symfony/Component/Cache/CacheItem.php b/src/Symfony/Component/Cache/CacheItem.php
index 4ab5d1a264..d7edb7f80a 100644
--- a/src/Symfony/Component/Cache/CacheItem.php
+++ b/src/Symfony/Component/Cache/CacheItem.php
@@ -56,6 +56,8 @@ final class CacheItem implements CacheItemInterface
 
     /**
      * {@inheritdoc}
+     *
+     * @return $this
      */
     public function set($value)
     {
@@ -66,6 +68,8 @@ final class CacheItem implements CacheItemInterface
 
     /**
      * {@inheritdoc}
+     *
+     * @return $this
      */
     public function expiresAt($expiration)
     {
@@ -82,6 +86,8 @@ final class CacheItem implements CacheItemInterface
 
     /**
      * {@inheritdoc}
+     *
+     * @return $this
      */
     public function expiresAfter($time)
     {
@@ -103,7 +109,7 @@ final class CacheItem implements CacheItemInterface
      *
      * @param string|string[] $tags A tag or array of tags
      *
-     * @return static
+     * @return $this
      *
      * @throws InvalidArgumentException When $tag is not valid
      */
diff --git a/src/Symfony/Component/DomCrawler/FormFieldRegistry.php b/src/Symfony/Component/DomCrawler/FormFieldRegistry.php
index bd73742af7..901a5c8dec 100644
--- a/src/Symfony/Component/DomCrawler/FormFieldRegistry.php
+++ b/src/Symfony/Component/DomCrawler/FormFieldRegistry.php
@@ -121,8 +121,10 @@ class FormFieldRegistry
         if ((!\is_array($value) && $target instanceof Field\FormField) || $target instanceof Field\ChoiceFormField) {
             $target->setValue($value);
         } elseif (\is_array($value)) {
-            $fields = self::create($name, $value);
-            foreach ($fields->all() as $k => $v) {
+            $registry = new static();
+            $registry->base = $name;
+            $registry->fields = $value;
+            foreach ($registry->all() as $k => $v) {
                 $this->set($k, $v);
             }
         } else {
@@ -140,26 +142,6 @@ class FormFieldRegistry
         return $this->walk($this->fields, $this->base);
     }
 
-    /**
-     * Creates an instance of the class.
-     *
-     * This function is made private because it allows overriding the $base and
-     * the $values properties without any type checking.
-     *
-     * @param string $base   The fully qualified name of the base field
-     * @param array  $values The values of the fields
-     *
-     * @return static
-     */
-    private static function create($base, array $values)
-    {
-        $registry = new static();
-        $registry->base = $base;
-        $registry->fields = $values;
-
-        return $registry;
-    }
-
     /**
      * Transforms a PHP array in a list of fully qualified name / value.
      *
diff --git a/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php b/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php
index cdd6685d84..8e48788828 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php
@@ -34,7 +34,7 @@ interface DenormalizerInterface
      * @param string $format  Format the given data was extracted from
      * @param array  $context Options available to the denormalizer
      *
-     * @return object
+     * @return object|array
      *
      * @throws BadMethodCallException   Occurs when the normalizer is not called in an expected context
      * @throws InvalidArgumentException Occurs when the arguments are not coherent or not supported