Resolve #2025089 "Api ext"

Closes #2025089 (attempt to extend existing API)

core/modules/book/tests/src/Functional/BookTest.php

@@ -4,6 +4,7 @@
 
 use Drupal\Core\Cache\Cache;
 use Drupal\Tests\BrowserTestBase;
+use Drupal\user\Entity\Role;
 use Drupal\user\RoleInterface;
 
 /**
@@ -268,7 +269,7 @@ public function testBookExport() {
     // Now grant anonymous users permission to view the printer-friendly
     // version and verify that node access restrictions still prevent them from
     // seeing it.
-    user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, ['access printer-friendly version']);
+    Role::load(RoleInterface::ANONYMOUS_ID)->grantPermission('access printer-friendly version')->save();
     $this->drupalGet('book/export/html/' . $this->book->id());
     $this->assertSession()->statusCodeEquals(403);
   }