--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/sabre/vobject/lib/Property/Boolean.php	Sat Jan 13 09:06:10 2018 -0500
@@ -0,0 +1,63 @@
+<?php
+
+namespace Sabre\VObject\Property;
+
+use
+    Sabre\VObject\Property;
+
+/**
+ * Boolean property
+ *
+ * This object represents BOOLEAN values. These are always the case-insenstive
+ * string TRUE or FALSE.
+ *
+ * Automatic conversion to PHP's true and false are done.
+ *
+ * @copyright Copyright (C) 2011-2015 fruux GmbH (https://fruux.com/).
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class Boolean extends Property {
+
+    /**
+     * Sets a raw value coming from a mimedir (iCalendar/vCard) file.
+     *
+     * This has been 'unfolded', so only 1 line will be passed. Unescaping is
+     * not yet done, but parameters are not included.
+     *
+     * @param string $val
+     * @return void
+     */
+    public function setRawMimeDirValue($val) {
+
+        $val = strtoupper($val)==='TRUE'?true:false;
+        $this->setValue($val);
+
+    }
+
+    /**
+     * Returns a raw mime-dir representation of the value.
+     *
+     * @return string
+     */
+    public function getRawMimeDirValue() {
+
+        return $this->value?'TRUE':'FALSE';
+
+    }
+
+    /**
+     * Returns the type of value.
+     *
+     * This corresponds to the VALUE= parameter. Every property also has a
+     * 'default' valueType.
+     *
+     * @return string
+     */
+    public function getValueType() {
+
+        return 'BOOLEAN';
+
+    }
+
+}