diff --git a/src/Core/Manifest/VersionProvider.php b/src/Core/Manifest/VersionProvider.php
index fee190057..937128c90 100644
--- a/src/Core/Manifest/VersionProvider.php
+++ b/src/Core/Manifest/VersionProvider.php
@@ -4,6 +4,7 @@ namespace SilverStripe\Core\Manifest;
 
 use SilverStripe\Core\Config\Config;
 use Psr\SimpleCache\CacheInterface;
+use SilverStripe\Core\Config\Configurable;
 use SilverStripe\Core\Convert;
 use SilverStripe\Core\Injector\Injector;
 
@@ -24,6 +25,13 @@ use SilverStripe\Core\Injector\Injector;
  */
 class VersionProvider
 {
+    use Configurable;
+
+    /**
+     * @var array
+     */
+    private static $modules = [];
+
     /**
      * Gets a comma delimited string of package titles and versions
      *
diff --git a/src/Dev/DevelopmentAdmin.php b/src/Dev/DevelopmentAdmin.php
index a5c3df5a2..8ee9c371d 100644
--- a/src/Dev/DevelopmentAdmin.php
+++ b/src/Dev/DevelopmentAdmin.php
@@ -42,6 +42,23 @@ class DevelopmentAdmin extends Controller
         'generatesecuretoken',
     ];
 
+    /**
+     * Controllers for dev admin views
+     *
+     * e.g [
+     *     'urlsegment' => [
+     *         'controller' => 'SilverStripe\Dev\DevelopmentAdmin',
+     *         'links' => [
+     *             'urlsegment' => 'description',
+     *             ...
+     *         ]
+     *     ]
+     * ]
+     *
+     * @var array
+     */
+    private static $registered_controllers = [];
+
     /**
      * Assume that CLI equals admin permissions
      * If set to false, normal permission model will apply even in CLI mode
diff --git a/src/Forms/GridField/GridFieldDetailForm_ItemRequest.php b/src/Forms/GridField/GridFieldDetailForm_ItemRequest.php
index 3e35bcfeb..9aab66baf 100644
--- a/src/Forms/GridField/GridFieldDetailForm_ItemRequest.php
+++ b/src/Forms/GridField/GridFieldDetailForm_ItemRequest.php
@@ -36,6 +36,18 @@ class GridFieldDetailForm_ItemRequest extends RequestHandler
         'ItemEditForm'
     ];
 
+    /**
+     * The default form actions available to this item request
+     *
+     * e.g [
+     *     'showPagination': true,
+     *     'showAdd': true
+     * ]
+     *
+     * @var array
+     */
+    private static $formActions = [];
+
     /**
      *
      * @var GridField