Possible misprint

I think $ids array stores articles ids, because $articleModel->getItem()->id. Maybe copy-paste from line 159/line 206?
Also, this possible misprint can be found in  4.0 branch.

plugins/sampledata/blog/blog.php

@@ -282,7 +282,7 @@ public function onAjaxSampledataApplyStep1()
 				return $response;
 			}
 
-			// Get ID from category we just added
+			// Get ID from article we just added
 			$ids[] = $articleModel->getItem()->id;
 		}