_propDict)) { if (is_a($this->_propDict["value"], "Microsoft\Graph\Model\ChangeNotification")) { return $this->_propDict["value"]; } else { $this->_propDict["value"] = new ChangeNotification($this->_propDict["value"]); return $this->_propDict["value"]; } } return null; } /** * Sets the value * The set of notifications being sent to the notification URL. Required. * * @param ChangeNotification $val The value to assign to the value * * @return ChangeNotificationCollection The ChangeNotificationCollection */ public function setValue($val) { $this->_propDict["value"] = $val; return $this; } }