downgrade to kirby v3

vendor/ml/json-ld/DefaultDocumentFactory.php

@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * (c) Markus Lanthaler <mail@markus-lanthaler.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace ML\JsonLD;
+
+/**
+ * DefaultDocumentFactory creates new Documents
+ *
+ * @see Document
+ *
+ * @author Markus Lanthaler <mail@markus-lanthaler.com>
+ */
+class DefaultDocumentFactory implements DocumentFactoryInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function createDocument($iri = null)
+    {
+        return new Document($iri);
+    }
+}