5 files changed, 7 insertions, 7 deletions
diff --git a/core/modules/help/src/HelpTopicTwigLoader.php b/core/modules/help/src/HelpTopicTwigLoader.php
index fc2e61bbaaf..9178166597c 100644
--- a/core/modules/help/src/HelpTopicTwigLoader.php
+++ b/core/modules/help/src/HelpTopicTwigLoader.php
@@ -96,7 +96,7 @@ class HelpTopicTwigLoader extends FilesystemLoader {
   /**
    * {@inheritdoc}
    */
-  protected function findTemplate($name, $throw = TRUE) {
+  protected function findTemplate($name, $throw = TRUE): ?string {
     if (!str_ends_with($name, '.html.twig')) {
       if (!$throw) {
         return NULL;
diff --git a/core/modules/help/src/HelpTwigExtension.php b/core/modules/help/src/HelpTwigExtension.php
index e41ad66503d..b8a77a914f6 100644
--- a/core/modules/help/src/HelpTwigExtension.php
+++ b/core/modules/help/src/HelpTwigExtension.php
@@ -41,7 +41,7 @@ class HelpTwigExtension extends AbstractExtension {
   /**
    * {@inheritdoc}
    */
-  public function getFunctions() {
+  public function getFunctions(): array {
     return [
       new TwigFunction('help_route_link', [$this, 'getRouteLink']),
       new TwigFunction('help_topic_link', [$this, 'getTopicLink']),
diff --git a/core/modules/help/tests/modules/help_topics_twig_tester/src/HelpTestTwigExtension.php b/core/modules/help/tests/modules/help_topics_twig_tester/src/HelpTestTwigExtension.php
index f54e15e882a..abe16ebdb48 100644
--- a/core/modules/help/tests/modules/help_topics_twig_tester/src/HelpTestTwigExtension.php
+++ b/core/modules/help/tests/modules/help_topics_twig_tester/src/HelpTestTwigExtension.php
@@ -14,7 +14,7 @@ class HelpTestTwigExtension extends AbstractExtension {
   /**
    * {@inheritdoc}
    */
-  public function getNodeVisitors() {
+  public function getNodeVisitors(): array {
     return [
       new HelpTestTwigNodeVisitor(),
     ];
diff --git a/core/modules/help/tests/modules/help_topics_twig_tester/src/HelpTestTwigNodeVisitor.php b/core/modules/help/tests/modules/help_topics_twig_tester/src/HelpTestTwigNodeVisitor.php
index 953f2aa2ce4..9c53a2e0cf3 100644
--- a/core/modules/help/tests/modules/help_topics_twig_tester/src/HelpTestTwigNodeVisitor.php
+++ b/core/modules/help/tests/modules/help_topics_twig_tester/src/HelpTestTwigNodeVisitor.php
@@ -97,7 +97,7 @@ class HelpTestTwigNodeVisitor implements NodeVisitorInterface {
   /**
    * {@inheritdoc}
    */
-  public function getPriority() {
+  public function getPriority(): int {
     return -100;
   }
 
diff --git a/core/modules/help/tests/src/Unit/HelpTopicTwigTest.php b/core/modules/help/tests/src/Unit/HelpTopicTwigTest.php
index 1e182076608..13e6bdffda1 100644
--- a/core/modules/help/tests/src/Unit/HelpTopicTwigTest.php
+++ b/core/modules/help/tests/src/Unit/HelpTopicTwigTest.php
@@ -6,8 +6,8 @@ namespace Drupal\Tests\help\Unit;
 
 use Drupal\Core\Cache\Cache;
 use Drupal\help\HelpTopicTwig;
-use Drupal\Tests\Core\Template\StubTwigTemplate;
 use Drupal\Tests\UnitTestCase;
+use Twig\Template;
 use Twig\TemplateWrapper;
 
 /**
@@ -101,8 +101,8 @@ class HelpTopicTwigTest extends UnitTestCase {
       ->getMock();
 
     $template = $this
-      ->getMockBuilder(StubTwigTemplate::class)
-      ->onlyMethods(['render'])
+      ->getMockBuilder(Template::class)
+      ->onlyMethods(['render', 'getTemplateName', 'getDebugInfo', 'getSourceContext', 'doDisplay'])
       ->setConstructorArgs([$twig])
       ->getMock();