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diff --git a/web/core/modules/language/src/LanguageAccessControlHandler.php b/web/core/modules/language/src/LanguageAccessControlHandler.php
new file mode 100644
index 000000000..0a4fb9892
--- /dev/null
+++ b/web/core/modules/language/src/LanguageAccessControlHandler.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace Drupal\language;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Defines the access control handler for the language entity type.
+ *
+ * @see \Drupal\language\Entity\Language
+ */
+class LanguageAccessControlHandler extends EntityAccessControlHandler {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
+    switch ($operation) {
+      case 'view':
+        return parent::checkAccess($entity, $operation, $account);
+
+      case 'update':
+        /* @var \Drupal\Core\Language\LanguageInterface $entity */
+        return AccessResult::allowedIf(!$entity->isLocked())->addCacheableDependency($entity)
+          ->andIf(parent::checkAccess($entity, $operation, $account));
+
+      case 'delete':
+        /* @var \Drupal\Core\Language\LanguageInterface $entity */
+        return AccessResult::allowedIf(!$entity->isLocked())->addCacheableDependency($entity)
+          ->andIf(AccessResult::allowedIf(!$entity->isDefault())->addCacheableDependency($entity))
+          ->andIf(parent::checkAccess($entity, $operation, $account));
+
+      default:
+        // No opinion.
+        return AccessResult::neutral();
+    }
+  }
+
+}