--- /dev/null
+<?php
+
+ require_once('protected/required.php');
+
+ interface InstanceManager {
+
+ function createInstance($instance);
+ function updateInstance($instance);
+ function updateInstanceInfos($array);
+ function getInstance($id);
+ function getInstances();
+ function removeInstance($instance);
+ }
+
+?>
\ No newline at end of file