Integrate into core menus

+++ b/modules/menu_link_reference/menu_link_reference.info.yml
@@ -0,0 +1,6 @@
+package: Custom

Group

+++ b/modules/menu_link_reference/menu_link_reference.info.yml
@@ -0,0 +1,6 @@
+core: 8.x

delete

+++ b/modules/menu_link_reference/menu_link_reference.info.yml
@@ -0,0 +1,6 @@
+core_version_requirement: ^8 || ^9

^9 || ^10

Please!

+++ b/modules/menu_link_reference/src/Plugin/Field/FieldWidget/MenuLinkReference.php
@@ -0,0 +1,144 @@
+  const NONE = '_none';

visibility, public or private.

+++ b/modules/menu_link_reference/src/Plugin/Field/FieldWidget/MenuLinkReference.php
@@ -0,0 +1,144 @@
+      '#title' => t('Menu name'),

$this-t()

+++ b/modules/menu_link_reference/src/Plugin/Field/FieldWidget/MenuLinkReference.php
@@ -0,0 +1,144 @@
+      '#empty_option' => '- Please select -',

$this-t()

+++ b/modules/menu_link_reference/src/Plugin/Field/FieldWidget/MenuLinkReference.php
@@ -0,0 +1,144 @@
+      '#title' => t('Menu link'),

$this-t()

+++ b/modules/menu_link_reference/src/Plugin/Field/FieldWidget/MenuLinkReference.php
@@ -0,0 +1,144 @@
+    return array_map(fn (EntityInterface $e) => $e->label(), $menus);

return array_map(static fn (EntityInterface $e) => $e->label(), $menus);

+++ b/src/GroupContentMenuStorage.php
@@ -0,0 +1,103 @@
+  public function updateLinks(array $tree, array $update, $do): void {

A little more details on $do variable would help. from its name I would assume its a boolean, but then it isn't type hinted. Hmm, actually, the param arguments are all a little out of sync.

+++ b/tests/src/FunctionalJavascript/GroupContentSubmenuTest.php
@@ -35,11 +34,7 @@ class GroupContentSubmenuTest extends WebDriverTestBase  {
@@ -47,20 +42,22 @@ class GroupContentSubmenuTest extends WebDriverTestBase  {

Class test name should rename.

+++ b/tests/src/FunctionalJavascript/GroupContentSubmenuTest.php
@@ -47,20 +42,22 @@ class GroupContentSubmenuTest extends WebDriverTestBase  {
+    $this->groupContenMmenuType = $this->randomMachineName();

Variable naming a bit off.