API Upgrade to SilverStripe\CMS namespace

ORM/DataQuery.php

@@ -7,6 +7,7 @@ use Injector;
 use ClassInfo;
 use Convert;
 use Object;
+use SilverStripe\ORM\Connect\SS_Query;
 use SilverStripe\ORM\Queries\SQLConditionGroup;
 use SilverStripe\ORM\Queries\SQLSelect;
 

control/Director.php

@@ -1,5 +1,6 @@
 <?php
 
+use SilverStripe\CMS\Model\SiteTree;
 use SilverStripe\ORM\DataModel;
 use SilverStripe\ORM\Versioning\Versioned;
 /**
@@ -467,7 +468,7 @@ class Director implements TemplateGlobalProvider {
 	 * Return the {@link SiteTree} object that is currently being viewed. If there is no SiteTree
 	 * object to return, then this will return the current controller.
 	 *
-	 * @return SiteTree
+	 * @return SiteTree|Controller
 	 */
 	public static function get_current_page() {
 		return self::$current_page ? self::$current_page : Controller::curr();

docs/en/04_Changelogs/4.0.0.md

@@ -57,6 +57,7 @@
  * `Folder_UnusedAssetsField` is removed.
  * `UpgradeSiteTreePermissionSchemaTask` is removed.
  * `$action` parameter to `Controller::Link()` method is standardised.
+ * Removed `UpgradeSiteTreePermissionSchemaTask`
 
 ## New API
 
@@ -1001,4 +1002,4 @@ The default `admin/` URL to access the CMS interface can now be changed via a cu
 `AdminRootController`. If your website or module has hard coded `admin` URLs in PHP, templates or JavaScript, make sure 
 to update those with the appropriate function or config call. See 
 [CMS architecture](/developer_guides/customising_the_admin_interface/cms-architecture#the-admin-url) for language 
-specific functions.
+specific functions.

view/ViewableData.php

@@ -1,6 +1,7 @@
 <?php
 
 use SilverStripe\ORM\FieldType\DBField;
+use SilverStripe\ORM\FieldType\DBHTMLText;
 
 /**
  * A ViewableData object is any object that can be rendered into a template/view.