// Use protected instead of private for classes we can override #PSCFV-1976

controllers/admin/AdminAddressesController.php

@@ -28,7 +28,7 @@
 class AdminAddressesControllerCore extends AdminController
 {
 	/** @var array countries list */
-	private $countries_array = array();
+	protected $countries_array = array();
 
 	public function __construct()
 	{