Dummy broken code for phpstan

Author: james-hill-matomo

Slack.php

@@ -41,6 +41,10 @@ class Slack extends Plugin
         ReportRenderer::TSV_FORMAT  => 'plugins/Morpheus/images/export.png',
     );
 
+    /**
+     * @var string
+     */
+
     public function registerEvents()
     {
         return [