diff --git a/core/modules/node/src/NodeViewBuilder.php b/core/modules/node/src/NodeViewBuilder.php
index d7138db..c65250e 100644
--- a/core/modules/node/src/NodeViewBuilder.php
+++ b/core/modules/node/src/NodeViewBuilder.php
@@ -148,7 +148,7 @@ protected function alterBuild(array &$build, EntityInterface $entity, EntityView
     if ($entity->id()) {
       if ($entity->isDefaultRevision()) {
         $build['#contextual_links']['node'] = [
-          'route_parameters' => array('node' => $entity->id()),
+          'route_parameters' => ['node' => $entity->id()],
           'metadata' => ['changed' => $entity->getChangedTime()],
         ];
       }
diff --git a/core/modules/node/src/Tests/NodeRevisionsTest.php b/core/modules/node/src/Tests/NodeRevisionsTest.php
index 725a085..c1d37d7 100644
--- a/core/modules/node/src/Tests/NodeRevisionsTest.php
+++ b/core/modules/node/src/Tests/NodeRevisionsTest.php
@@ -162,8 +162,8 @@ function testRevisions() {
 
     // Confirm that the "Edit" and "Delete" contextual links appear for the
     // default revision.
-    $ids = array('node:node=' . $node->id() . ':changed=' . $node->getChangedTime());
-    $json = $this->renderContextualLinks($ids, "node/" . $node->id());
+    $ids = ['node:node=' . $node->id() . ':changed=' . $node->getChangedTime()];
+    $json = $this->renderContextualLinks($ids, 'node/' . $node->id());
     $this->verbose($json[$ids[0]]);
 
     $expected = '<li class="entitynodeedit-form"><a href="' . base_path() . 'node/' . $node->id() . '/edit">Edit</a></li>';
@@ -187,8 +187,8 @@ function testRevisions() {
 
     // Confirm that "Edit" and "Delete" contextual links don't appear for
     // non-default revision.
-    $ids = array('node_revision::node=' . $node->id() . '&node_revision=' . $node->getRevisionId() . ':');
-    $json = $this->renderContextualLinks($ids, "node/" . $node->id() . '/revisions/' . $node->getRevisionId() . '/view');
+    $ids = ['node_revision::node=' . $node->id() . '&node_revision=' . $node->getRevisionId() . ':'];
+    $json = $this->renderContextualLinks($ids, 'node/' . $node->id() . '/revisions/' . $node->getRevisionId() . '/view');
     $this->verbose($json[$ids[0]]);
 
     $this->assertFalse(strstr($json[$ids[0]], '<li class="entitynodeedit-form">'), 'The "Edit" contextual link is not shown for a non-default revision.');
@@ -346,8 +346,9 @@ function testNodeRevisionWithoutLogMessage() {
     $node_revision = $node_storage->load($node->id());
     $this->assertTrue(empty($node_revision->revision_log->value), 'After a new node revision is saved with an empty log message, the log message for the node is empty.');
   }
+
   /**
-   * Get server-rendered contextual links for the given contextual links ids.
+   * Gets server-rendered contextual links for the given contextual links IDs.
    *
    * @param string[] $ids
    *   An array of contextual link IDs.
@@ -357,7 +358,7 @@ function testNodeRevisionWithoutLogMessage() {
    * @return string
    *   The decoded JSON response body.
    */
-  protected function renderContextualLinks($ids, $current_path) {
+  protected function renderContextualLinks(array $ids, $current_path) {
     $post = array();
     for ($i = 0; $i < count($ids); $i++) {
       $post['ids[' . $i . ']'] = $ids[$i];