1 files changed, 18 insertions, 0 deletions
diff --git a/calendar/lib/SabreDAV/lib/OldSabre/DAVACL/PrincipalBackend/AbstractBackend.php b/calendar/lib/SabreDAV/lib/OldSabre/DAVACL/PrincipalBackend/AbstractBackend.php
new file mode 100644
index 0000000..1be74c7
--- /dev/null
+++ b/calendar/lib/SabreDAV/lib/OldSabre/DAVACL/PrincipalBackend/AbstractBackend.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace OldSabre\DAVACL\PrincipalBackend;
+
+/**
+ * Abstract Principal Backend
+ *
+ * Currently this class has no function. It's here for consistency and so we
+ * have a non-bc-breaking way to add a default generic implementation to
+ * functions we may add in the future.
+ *
+ * @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+abstract class AbstractBackend implements BackendInterface {
+
+}