diff --git a/collector/cloudwatch/classes/collector.php b/collector/cloudwatch/classes/collector.php
index 9fe7a7a..6c16efd 100644
--- a/collector/cloudwatch/classes/collector.php
+++ b/collector/cloudwatch/classes/collector.php
@@ -81,6 +81,8 @@ public function record_metric(metric_item $item) {
      * Record an array of metric data
      *
      * @param array $items
+     * @param \progress_bar|null $progress
+     * @return mixed
      */
     public function record_metrics(array $items, \progress_bar $progress = null) {
         $metricdata = [];