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diff --git a/web/core/modules/user/src/UserStorage.php b/web/core/modules/user/src/UserStorage.php
new file mode 100644
index 000000000..809f3e384
--- /dev/null
+++ b/web/core/modules/user/src/UserStorage.php
@@ -0,0 +1,76 @@
+<?php
+
+namespace Drupal\user;
+
+use Drupal\Core\Entity\ContentEntityInterface;
+use Drupal\Core\Entity\Sql\SqlContentEntityStorage;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Controller class for users.
+ *
+ * This extends the Drupal\Core\Entity\Sql\SqlContentEntityStorage class,
+ * adding required special handling for user objects.
+ */
+class UserStorage extends SqlContentEntityStorage implements UserStorageInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function doSaveFieldItems(ContentEntityInterface $entity, array $names = []) {
+    // The anonymous user account is saved with the fixed user ID of 0.
+    // Therefore we need to check for NULL explicitly.
+    if ($entity->id() === NULL) {
+      $entity->uid->value = $this->database->nextId($this->database->query('SELECT MAX(uid) FROM {users}')->fetchField());
+      $entity->enforceIsNew();
+    }
+    return parent::doSaveFieldItems($entity, $names);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function isColumnSerial($table_name, $schema_name) {
+    // User storage does not use a serial column for the user id.
+    return $table_name == $this->revisionTable && $schema_name == $this->revisionKey;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function updateLastLoginTimestamp(UserInterface $account) {
+    $this->database->update('users_field_data')
+      ->fields(['login' => $account->getLastLoginTime()])
+      ->condition('uid', $account->id())
+      ->execute();
+    // Ensure that the entity cache is cleared.
+    $this->resetCache([$account->id()]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function updateLastAccessTimestamp(AccountInterface $account, $timestamp) {
+    $this->database->update('users_field_data')
+      ->fields([
+        'access' => $timestamp,
+      ])
+      ->condition('uid', $account->id())
+      ->execute();
+    // Ensure that the entity cache is cleared.
+    $this->resetCache([$account->id()]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function deleteRoleReferences(array $rids) {
+    // Remove the role from all users.
+    $this->database->delete('user__roles')
+      ->condition('roles_target_id', $rids)
+      ->execute();
+
+    $this->resetCache();
+  }
+
+}