fix phpstan

Editor/Field.php

@@ -500,7 +500,7 @@ public function upload($_ = null)
 	 *                              date formatting string, or a required flag. The actual options available
 	 *                              depend upon the validation function used.
 	 *
-	 * @return ($_ is null ? callable|string : $this) The validation method if no parameter is given.
+	 * @return ($_ is null ? array[] : $this) The validation method if no parameter is given.
 	 */
 	public function validator($_ = null, $opts = null)
 	{

Editor/Join.php

@@ -239,7 +239,7 @@ public function get($_ = null)
 	 *                                link table.
 	 * @param string          $table  Join table name, if using a link table
 	 *
-	 * @return ($parent is null ? Join : $this)
+	 * @return ($parent is null ? array : $this)
 	 *
 	 * @deprecated 1.5 Please use the {@see Join->link()} method rather than this
 	 *                                method now.

Ext.php

@@ -27,7 +27,7 @@ class Ext
 	 * If using PHP 5.4 or later, simply create a 'new' instance of the
 	 * target class and chain methods as normal.
 	 *
-	 * @return \DataTables\Editor|\DataTables\Editor\Field|\DataTables\Editor\Join|\DataTables\Editor\Upload Instantiated class
+	 * @return static Instantiated class
 	 */
 	public static function instantiate()
 	{
@@ -44,7 +44,7 @@ public static function instantiate()
 	 * This method performs exactly the same actions as the 'instantiate'
 	 * static method, but is simply shorter and easier to type!
 	 *
-	 * @return \DataTables\Editor|\DataTables\Editor\Field|\DataTables\Editor\Join|\DataTables\Editor\Upload class
+	 * @return static class
 	 */
 	public static function inst()
 	{