diff --git a/core/lib/Drupal/Core/Entity/ContentEntityBase.php b/core/lib/Drupal/Core/Entity/ContentEntityBase.php
index 38005dc..27d130f 100644
--- a/core/lib/Drupal/Core/Entity/ContentEntityBase.php
+++ b/core/lib/Drupal/Core/Entity/ContentEntityBase.php
@@ -534,7 +534,7 @@ public function getFields($include_computed = TRUE) {
    * {@inheritdoc}
    */
   public function getTranslatableFields($include_computed = TRUE) {
-    $fields = array();
+    $fields = [];
     foreach ($this->getFieldDefinitions() as $name => $definition) {
       if (($include_computed || !$definition->isComputed()) && $definition->isTranslatable()) {
         $fields[$name] = $this->get($name);
diff --git a/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php b/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php
index 7c4aa07..27dccd8 100644
--- a/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php
+++ b/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php
@@ -421,7 +421,6 @@ protected function invokeFieldMethod($method, ContentEntityInterface $entity) {
           $result[$langcode][$name] = $args ? call_user_func_array([$items, $method], $args) : $items->{$method}();
         }
       }
-
     }
     return $result;
   }
diff --git a/core/modules/system/src/Tests/Entity/ContentEntityCloneTest.php b/core/modules/system/src/Tests/Entity/ContentEntityCloneTest.php
index 7f7a0a7..da70c2f 100644
--- a/core/modules/system/src/Tests/Entity/ContentEntityCloneTest.php
+++ b/core/modules/system/src/Tests/Entity/ContentEntityCloneTest.php
@@ -2,13 +2,13 @@
 
 /**
  * @file
- * Contains Drupal\system\Tests\Entity\ContentEntityCloneTest.
+ * Contains \Drupal\system\Tests\Entity\ContentEntityCloneTest.
  */
 
 namespace Drupal\system\Tests\Entity;
 
-use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\entity_test\Entity\EntityTestMul;
+use Drupal\language\Entity\ConfigurableLanguage;
 
 /**
  * Tests proper cloning of content entities.
@@ -18,14 +18,12 @@
 class ContentEntityCloneTest extends EntityUnitTestBase {
 
   /**
-   * Modules to enable.
-   *
-   * @var array
+   * {@inheritdoc}
    */
   public static $modules = ['language', 'entity_test'];
 
   /**
-   * @inheritdoc
+   * {@inheritdoc}
    */
   protected function setUp() {
     parent::setUp();
@@ -37,7 +35,7 @@ protected function setUp() {
   }
 
   /**
-   * Tests correct entity reference on fields after clone.
+   * Tests if entity references on fields are still correct after cloning.
    */
   public function testFieldEntityReferenceAfterClone() {
     $user = $this->createUser();
@@ -58,14 +56,15 @@ public function testFieldEntityReferenceAfterClone() {
       $translation = $clone->getTranslation($langcode);
       foreach ($translation->getFields() as $field_name => $field) {
         if ($field->getFieldDefinition()->isTranslatable()) {
-          $this->assertEqual($langcode, $field->getEntity()->language()->getId(), format_string('Translatable field %field_name on translation %langcode has correct entity reference in translation %langcode after cloning.',
-            array('%field_name' => $field_name, '%langcode' => $langcode)));
+          $args = ['%field_name' => $field_name, '%langcode' => $langcode];
+          $this->assertEqual($langcode, $field->getEntity()->language()->getId(), format_string('Translatable field %field_name on translation %langcode has correct entity reference in translation %langcode after cloning.', $args));
         }
         else {
-          $this->assertEqual($default_langcode, $field->getEntity()->language()->getId(), format_string('Non translatable field %field_name on translation %langcode has correct entity reference in the default translation %default_langcode after cloning.',
-            array('%field_name' => $field_name, '%langcode' => $langcode, '%default_langcode' => $default_langcode)));
+          $args = ['%field_name' => $field_name, '%langcode' => $langcode, '%default_langcode' => $default_langcode];
+          $this->assertEqual($default_langcode, $field->getEntity()->language()->getId(), format_string('Non translatable field %field_name on translation %langcode has correct entity reference in the default translation %default_langcode after cloning.', $args));
         }
       }
     }
   }
+
 }
diff --git a/core/modules/system/src/Tests/Entity/EntityTranslationTest.php b/core/modules/system/src/Tests/Entity/EntityTranslationTest.php
index 9afdfa5..21ff392 100644
--- a/core/modules/system/src/Tests/Entity/EntityTranslationTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityTranslationTest.php
@@ -770,7 +770,7 @@ function testEntityAdapter() {
   }
 
   /**
-   * Tests correct entity reference on fields after adding new translation.
+   * Tests if entity references are correct after adding a new translation.
    */
   public function testFieldEntityReference() {
     $entity_type = 'entity_test_mul';
@@ -787,14 +787,15 @@ public function testFieldEntityReference() {
       $translation = $entity->getTranslation($langcode);
       foreach ($translation->getFields() as $field_name => $field) {
         if ($field->getFieldDefinition()->isTranslatable()) {
-          $this->assertEqual($langcode, $field->getEntity()->language()->getId(), format_string('Translatable field %field_name on translation %langcode has correct entity reference in translation %langcode.',
-            array('%field_name' => $field_name, '%langcode' => $langcode)));
+          $args = ['%field_name' => $field_name, '%langcode' => $langcode];
+          $this->assertEqual($langcode, $field->getEntity()->language()->getId(), format_string('Translatable field %field_name on translation %langcode has correct entity reference in translation %langcode.', $args));
         }
         else {
-          $this->assertEqual($default_langcode, $field->getEntity()->language()->getId(), format_string('Non translatable field %field_name on translation %langcode has correct entity reference in the default translation %default_langcode.',
-            array('%field_name' => $field_name, '%langcode' => $langcode, '%default_langcode' => $default_langcode)));
+          $args = ['%field_name' => $field_name, '%langcode' => $langcode, '%default_langcode' => $default_langcode];
+          $this->assertEqual($default_langcode, $field->getEntity()->language()->getId(), format_string('Non translatable field %field_name on translation %langcode has correct entity reference in the default translation %default_langcode.', $args));
         }
       }
     }
   }
+
 }