diff --git a/core/lib/Drupal/Core/Entity/ContentEntityDatabaseStorage.php b/core/lib/Drupal/Core/Entity/ContentEntityDatabaseStorage.php
index ed3d061..b39d900 100644
--- a/core/lib/Drupal/Core/Entity/ContentEntityDatabaseStorage.php
+++ b/core/lib/Drupal/Core/Entity/ContentEntityDatabaseStorage.php
@@ -329,7 +329,7 @@ public function getTableMapping() {
           // the language code of the default revision.
           ->setExtraColumns($this->dataTable, array('default_langcode'));
 
-        $revision_base_fields = array_merge(array($this->idKey, $this->revisionKey, $this->langcodeKey), $revisin_metadata_fields);
+        $revision_base_fields = array_merge(array($this->idKey, $this->revisionKey, $this->langcodeKey), $revision_metadata_fields);
         $this->tableMapping->setFieldNames($this->revisionTable, $revision_base_fields);
 
         $revision_data_key_fields = array($this->idKey, $this->revisionKey, $this->langcodeKey);
diff --git a/core/lib/Drupal/Core/Entity/EntityTypeInterface.php b/core/lib/Drupal/Core/Entity/EntityTypeInterface.php
index 04a83f1..b73de24 100644
--- a/core/lib/Drupal/Core/Entity/EntityTypeInterface.php
+++ b/core/lib/Drupal/Core/Entity/EntityTypeInterface.php
@@ -140,6 +140,16 @@ public function getKey($key);
    */
   public function hasKey($key);
 
+  /**
+   * Sets a specific entity key.
+   *
+   * @param string $key
+   *   The name of the entity key to return.
+   * @param string $value
+   *   The new value of the key.
+   *
+   * @return $this
+   */
   public function setKey($key, $value);
 
   /**
diff --git a/core/modules/views/tests/Drupal/views/Tests/EntityViewsDataTest.php b/core/modules/views/tests/Drupal/views/Tests/EntityViewsDataTest.php
index 5ce652b..5f0a8c7 100644
--- a/core/modules/views/tests/Drupal/views/Tests/EntityViewsDataTest.php
+++ b/core/modules/views/tests/Drupal/views/Tests/EntityViewsDataTest.php
@@ -7,8 +7,8 @@
 
 namespace Drupal\views\Tests {
 
-  use Drupal\Core\Entity\ContentEntityType;
-  use Drupal\Core\Entity\EntityType;
+use Drupal\Core\Entity\ContentEntityType;
+use Drupal\Core\Entity\EntityType;
 use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem;
 use Drupal\Core\Field\Plugin\Field\FieldType\IntegerItem;
@@ -22,7 +22,7 @@
 use Drupal\views\EntityViewsData;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 
-/**
+  /**
  * @coversDefaultClass \Drupal\views\EntityViewsData
  * @group Views
  */