Figured out puzzling psalm error we suppress, the reason is in the versions of php we declare to be compatible with: vimeo/psalm#3019 (comment)

hostep · hostep · commit 862980af2ce6 · 2020-06-08T21:09:25.000+02:00
diff --git a/Console/Progress.php b/Console/Progress.php
@@ -72,6 +72,7 @@ public function setMessage(string $message)
 
     /**
      * @psalm-suppress ReservedWord
+     * When we remove PHP 7.0 support from the composer.json file, we can remove this suppress line
      */
     public function finish()
     {

Original file line number	Diff line number	Diff line change
`@@ -72,6 +72,7 @@ public function setMessage(string $message)`
`72`	`72`
`73`	`73`	`/**`
`74`	`74`	`* @psalm-suppress ReservedWord`
	`75`	`+ * When we remove PHP 7.0 support from the composer.json file, we can remove this suppress line`
`75`	`76`	`*/`
`76`	`77`	`public function finish()`
`77`	`78`	`{`