Issue #3495407 by tr: Parameter xxx has null default value, but is not marked as nullable

Closes #3495407

src/Core/ConfigurationAccessControlInterface.php

@@ -14,7 +14,7 @@ interface ConfigurationAccessControlInterface {
   /**
    * Check configuration access.
    *
-   * @param \Drupal\Core\Session\AccountInterface $account
+   * @param \Drupal\Core\Session\AccountInterface|null $account
    *   (optional) The user for which to check access, or NULL to check access
    *   for the current user. Defaults to NULL.
    * @param bool $return_as_object
@@ -27,6 +27,6 @@ interface ConfigurationAccessControlInterface {
    *   returned, i.e. TRUE means access is explicitly allowed, FALSE means
    *   access is either explicitly forbidden or "no opinion".
    */
-  public function checkConfigurationAccess(AccountInterface $account = NULL, $return_as_object = FALSE);
+  public function checkConfigurationAccess(?AccountInterface $account = NULL, bool $return_as_object = FALSE);
 
 }