quietone
--- a/core/modules/rest/tests/src/Functional/FileUploadResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/FileUploadResourceTestBase.php
    return new CacheableMetadata();
  }

+  /**
+   * The cacheability of unauthorized 'view' entity access.
+   *
+   * @param bool $is_authenticated
+   *   Whether the current request is authenticated or not. This matters for
+   *   some entity access control handlers, but not for most.
+   *
+   * @return \Drupal\Core\Cache\CacheableMetadata
+   *   The expected cacheability.
+   */
+  protected function getExpectedUnauthorizedEntityAccessCacheability($is_authenticated) {
--- a/core/modules/rest/tests/src/Functional/FileUploadResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/FileUploadResourceTestBase.php
    return new CacheableMetadata();
  }

+  /**
+   * Empty function.
+   *
+   * Needed by PHPStan for unused function
+   * BasicAuthResourceTestTrait::assertResponseWhenMissingAuthentication().
+   * CookieResourceTestTrait::assertResponseWhenMissingAuthentication().
+   */
+  protected function getExpectedUnauthorizedEntityAccessCacheability($is_authenticated) {}
-  protected function getExpectedUnauthorizedEntityAccessCacheability($is_authenticated) {}
+  protected function getExpectedUnauthorizedEntityAccessCacheability(bool $is_authenticated): void {}
--- a/core/modules/user/tests/src/Functional/UserRegistrationRestTest.php
+++ b/core/modules/user/tests/src/Functional/UserRegistrationRestTest.php
    return new CacheableMetadata();
  }

+  /**
+   * Empty function.
+   *
+   * Needed by PHPStan for unused function
+   * CookieResourceTestTrait::assertResponseWhenMissingAuthentication().
+   */
+  protected function getExpectedUnauthorizedEntityAccessCacheability($is_authenticated) {}
-  protected function getExpectedUnauthorizedEntityAccessCacheability($is_authenticated) {}
+  protected function getExpectedUnauthorizedEntityAccessCacheability(bool $is_authenticated): void {}
--- a/core/modules/rest/tests/src/Functional/FileUploadResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/FileUploadResourceTestBase.php
    return new CacheableMetadata();
  }

+  /**
+   * Empty function.
+   *
+   * Needed by PHPStan for unused function
+   * BasicAuthResourceTestTrait::assertResponseWhenMissingAuthentication().
+   * CookieResourceTestTrait::assertResponseWhenMissingAuthentication().
+   */
+  protected function getExpectedUnauthorizedEntityAccessCacheability(bool $is_authenticated): void {}
-  protected function getExpectedUnauthorizedEntityAccessCacheability(bool $is_authenticated): void {}
+  protected function getExpectedUnauthorizedEntityAccessCacheability(bool $is_authenticated) {}
--- a/core/modules/user/tests/src/Functional/UserRegistrationRestTest.php
+++ b/core/modules/user/tests/src/Functional/UserRegistrationRestTest.php
    return new CacheableMetadata();
  }

+  /**
+   * Empty function.
+   *
+   * Needed by PHPStan for unused function
+   * CookieResourceTestTrait::assertResponseWhenMissingAuthentication().
+   */
+  protected function getExpectedUnauthorizedEntityAccessCacheability(bool $is_authenticated): void {}
-  protected function getExpectedUnauthorizedEntityAccessCacheability(bool $is_authenticated): void {}
+  protected function getExpectedUnauthorizedEntityAccessCacheability(bool $is_authenticated) {}