There is nothing to do here. Model create-update action scenario is part of the application. It is still possible but the spec will need custom extension(s) and will possibly bloat spec for no significant gain.

Author: SOHELAHMED7

src/lib/items/FractalAction.php

@@ -202,7 +202,6 @@ public function hasTemplate():bool
 
     public function getTemplate():?string
     {
-        //@TODO: Model scenarios for create/update actions
         return $this->templateFactory()->getTemplate();
     }
 

src/lib/items/RestAction.php

@@ -126,7 +126,6 @@ public function hasTemplate():bool
 
     public function getTemplate():?string
     {
-        //@TODO: Model scenarios for create/update actions
         $template = ActionTemplates::getTemplate($this->id);
         if (!$template) {
             return null;