--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/libcalendaring/lib/Sabre/VObject/Document.php	Sat Jan 13 08:57:56 2018 -0500
@@ -0,0 +1,109 @@
+<?php
+
+namespace Sabre\VObject;
+
+/**
+ * Document
+ *
+ * A document is just like a component, except that it's also the top level
+ * element.
+ *
+ * Both a VCALENDAR and a VCARD are considered documents.
+ *
+ * This class also provides a registry for document types.
+ *
+ * @copyright Copyright (C) 2007-2013 fruux GmbH. All rights reserved.
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+abstract class Document extends Component {
+
+    /**
+     * The default name for this component.
+     *
+     * This should be 'VCALENDAR' or 'VCARD'.
+     *
+     * @var string
+     */
+    static $defaultName;
+
+    /**
+     * Creates a new document.
+     *
+     * We're changing the default behavior slightly here. First, we don't want
+     * to have to specify a name (we already know it), and we want to allow
+     * children to be specified in the first argument.
+     *
+     * But, the default behavior also works.
+     *
+     * So the two sigs:
+     *
+     * new Document(array $children = array());
+     * new Document(string $name, array $children = array())
+     *
+     * @return void
+     */
+    public function __construct() {
+
+        $args = func_get_args();
+        if (count($args)===0 || is_array($args[0])) {
+            array_unshift($args, static::$defaultName);
+            call_user_func_array(array('parent', '__construct'), $args);
+        } else {
+            call_user_func_array(array('parent', '__construct'), $args);
+        }
+
+    }
+
+    /**
+     * Creates a new component
+     *
+     * This method automatically searches for the correct component class, based
+     * on its name.
+     *
+     * You can specify the children either in key=>value syntax, in which case
+     * properties will automatically be created, or you can just pass a list of
+     * Component and Property object.
+     *
+     * @param string $name
+     * @param array $children
+     * @return Component
+     */
+    public function createComponent($name, array $children = array()) {
+
+        $component = Component::create($name);
+        foreach($children as $k=>$v) {
+
+            if ($v instanceof Node) {
+                $component->add($v);
+            } else {
+                $component->add($k, $v);
+            }
+
+        }
+        return $component;
+
+    }
+
+    /**
+     * Factory method for creating new properties
+     *
+     * This method automatically searches for the correct property class, based
+     * on its name.
+     *
+     * You can specify the parameters either in key=>value syntax, in which case
+     * parameters will automatically be created, or you can just pass a list of
+     * Parameter objects.
+     *
+     * @param string $name
+     * @param mixed $value
+     * @param array $parameters
+     * @return Property
+     */
+    public function createProperty($name, $value = null, array $parameters = array()) {
+
+        return Property::create($name, $value, $parameters);
+
+    }
+
+}