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system/src/Grav/Framework/Collection/AbstractLazyCollection.php

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+<?php
+/**
+ * @package    Grav\Framework\Collection
+ *
+ * @copyright  Copyright (C) 2015 - 2018 Trilby Media, LLC. All rights reserved.
+ * @license    MIT License; see LICENSE file for details.
+ */
+
+namespace Grav\Framework\Collection;
+
+use Doctrine\Common\Collections\AbstractLazyCollection as BaseAbstractLazyCollection;
+
+/**
+ * General JSON serializable collection.
+ *
+ * @package Grav\Framework\Collection
+ */
+abstract class AbstractLazyCollection extends BaseAbstractLazyCollection implements CollectionInterface
+{
+    /**
+     * The backed collection to use
+     *
+     * @var ArrayCollection
+     */
+    protected $collection;
+
+    /**
+     * {@inheritDoc}
+     */
+    public function reverse()
+    {
+        $this->initialize();
+        return $this->collection->reverse();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function shuffle()
+    {
+        $this->initialize();
+        return $this->collection->shuffle();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function chunk($size)
+    {
+        $this->initialize();
+        return $this->collection->chunk($size);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function jsonSerialize()
+    {
+        $this->initialize();
+        return $this->collection->jsonSerialize();
+    }
+}