Issue #3342567 by jungle: Declare $modules property in test classes protected

modules/cron_example/tests/src/Functional/CronExampleTest.php

@@ -25,7 +25,7 @@ class CronExampleTest extends ExamplesBrowserTestBase {
    *
    * @var array
    */
-  public static $modules = ['cron_example', 'node'];
+  protected static $modules = ['cron_example', 'node'];
 
   /**
    * {@inheritdoc}

modules/field_example/tests/src/Functional/FieldExampleBrowserTestBase.php

@@ -51,7 +51,7 @@ abstract class FieldExampleBrowserTestBase extends ExamplesBrowserTestBase {
    *
    * @var array
    */
-  public static $modules = ['block', 'node', 'field_ui', 'field_example'];
+  protected static $modules = ['block', 'node', 'field_ui', 'field_example'];
 
   /**
    * {@inheritdoc}

modules/pager_example/tests/src/Functional/PagerExampleTest.php

@@ -20,7 +20,7 @@ class PagerExampleTest extends ExamplesBrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  public static $modules = ['pager_example', 'node'];
+  protected static $modules = ['pager_example', 'node'];
 
   /**
    * {@inheritdoc}

modules/session_example/tests/src/Functional/SessionExampleTest.php

@@ -23,7 +23,7 @@ class SessionExampleTest extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  public static $modules = ['session_example', 'block'];
+  protected static $modules = ['session_example', 'block'];
 
   /**
    * {@inheritdoc}

modules/stream_wrapper_example/tests/src/Kernel/StreamWrapperTest.php

@@ -29,7 +29,7 @@ class StreamWrapperTest extends KernelTestBase {
    *
    * @var array
    */
-  public static $modules = ['stream_wrapper_example', 'file', 'system'];
+  protected static $modules = ['stream_wrapper_example', 'file', 'system'];
 
   /**
    * {@inheritdoc}

tests/src/Functional/ExamplesBrowserTestBase.php

@@ -17,7 +17,7 @@ abstract class ExamplesBrowserTestBase extends BrowserTestBase {
    *
    * @var array
    */
-  public static $modules = ['examples', 'block'];
+  protected static $modules = ['examples', 'block'];
 
   /**
    * {@inheritdoc}