From 33de3b5e0f2f40f60603a2627e48049bd4aacaa7 Mon Sep 17 00:00:00 2001
From: Steve Boyd <emteknetnz@gmail.com>
Date: Thu, 28 Nov 2024 14:03:25 +1300
Subject: [PATCH] API Explicity mark nullable paramters for PHP 8.4

---
 src/Forms/GridFieldSiteTreeAddNewButton.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Forms/GridFieldSiteTreeAddNewButton.php b/src/Forms/GridFieldSiteTreeAddNewButton.php
index 7007f38..f54e97f 100644
--- a/src/Forms/GridFieldSiteTreeAddNewButton.php
+++ b/src/Forms/GridFieldSiteTreeAddNewButton.php
@@ -36,7 +36,7 @@ class GridFieldSiteTreeAddNewButton extends GridFieldAddNewButton implements Gri
      * @param SiteTree $parent
      * @return boolean
      */
-    public function getAllowedChildren(SiteTree $parent = null)
+    public function getAllowedChildren(?SiteTree $parent = null)
     {
         if (!$parent || !$parent->canAddChildren()) {
             return array();