Declaring ::setUp without a void return typehint is deprecated

Declaring ::setUp without a void return typehint in Tests is deprecated in drupal:9.0.0. Typehinting will be required before drupal:10.0.0.

Author: phdhiren

tests/src/Functional/ApiDocsAdminTest.php

@@ -68,7 +68,7 @@ protected function setupMenus() {
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
 
     // Add the system menu blocks to appropriate regions.

tests/src/Functional/ApiDocsJsonApi.php

@@ -67,7 +67,7 @@ class ApiDocsJsonApi extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
 
     $nodeStorage = $this->container->get('entity_type.manager')->getStorage('node');

tests/src/Functional/SmartdocRoutingTest.php

@@ -54,7 +54,7 @@ class SmartdocRoutingTest extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
 
     $this->apidoc = $this->container->get('entity_type.manager')

tests/src/Kernel/ApidocEntityTest.php

@@ -65,7 +65,7 @@ class ApidocEntityTest extends KernelTestBase {
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
 
     $this->installSchema('user', ['users_data']);