Issue #3426550 - Fix validation

entity_body_class.module

@@ -33,7 +33,7 @@ function entity_body_class_help($route_name, RouteMatchInterface $route_match) {
 function entity_body_class_entity_base_field_info(EntityTypeInterface $entity_type) {
   $fields = [];
 
-  if (in_array('Drupal\Core\Entity\ContentEntityInterface', class_implements($entity_type->getOriginalClass())) &&
+  if (in_array(ContentEntityInterface::class, class_implements($entity_type->getOriginalClass())) &&
     $entity_type->getLinkTemplate('canonical')
   ) {
     $fields['entity_body_class'] = BaseFieldDefinition::create('string')

src/EntityBodyClassPermissions.php

@@ -3,6 +3,7 @@
 namespace Drupal\entity_body_class;
 
 use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
+use Drupal\Core\Entity\ContentEntityInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
 use Symfony\Component\DependencyInjection\ContainerInterface;
@@ -48,7 +49,7 @@ class EntityBodyClassPermissions implements ContainerInjectionInterface {
     $permissions = [];
 
     foreach ($this->entityTypeManager->getDefinitions() as $definition) {
-      if (in_array('Drupal\Core\Entity\ContentEntityInterface', class_implements($definition->getOriginalClass())) &&
+      if (in_array(ContentEntityInterface::class, class_implements($definition->getOriginalClass())) &&
         $definition->getLinkTemplate('canonical')
       ) {
         $permissions["access {$definition->id()} body class field"] = [

src/Form/EntityBodyClassForm.php

@@ -3,6 +3,7 @@
 namespace Drupal\entity_body_class\Form;
 
 use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Entity\ContentEntityInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Form\ConfigFormBase;
 use Drupal\Core\Form\FormStateInterface;
@@ -73,7 +74,7 @@ class EntityBodyClassForm extends ConfigFormBase {
     ];
 
     foreach ($this->entityTypeManager->getDefinitions() as $definition) {
-      if (in_array('Drupal\Core\Entity\ContentEntityInterface', class_implements($definition->getOriginalClass())) &&
+      if (in_array(ContentEntityInterface::class, class_implements($definition->getOriginalClass())) &&
         $definition->getLinkTemplate('canonical')
       ) {
         $id = $definition->id();