updated core to 1.7.15

system/src/Grav/Common/GPM/AbstractCollection.php

@@ -1,8 +1,9 @@
 <?php
+
 /**
- * @package    Grav.Common.GPM
+ * @package    Grav\Common\GPM
  *
- * @copyright  Copyright (C) 2015 - 2018 Trilby Media, LLC. All rights reserved.
+ * @copyright  Copyright (c) 2015 - 2021 Trilby Media, LLC. All rights reserved.
  * @license    MIT License; see LICENSE file for details.
  */
 
@@ -10,19 +11,23 @@ namespace Grav\Common\GPM;
 
 use Grav\Common\Iterator;
 
+/**
+ * Class AbstractCollection
+ * @package Grav\Common\GPM
+ */
 abstract class AbstractCollection extends Iterator
 {
+    /**
+     * @return string
+     */
     public function toJson()
     {
-        $items = [];
-
-        foreach ($this->items as $name => $package) {
-            $items[$name] = $package->toArray();
-        }
-
-        return json_encode($items);
+        return json_encode($this->toArray(), JSON_THROW_ON_ERROR);
     }
 
+    /**
+     * @return array
+     */
     public function toArray()
     {
         $items = [];