added function docs

app/Conductors/PostConductor.php

@@ -90,6 +90,13 @@ class PostConductor extends Conductor
         return ($user !== null && $user->hasPermission('admin/posts') === true);
     }
 
+    /**
+     * Transform the model
+     *
+     * @param Model $model The model to transform.
+     * @return array The transformed model.
+     * @throws InvalidCastException Cannot cast item to model.
+     */
     public function transform(Model $model)
     {
         $result = $model->toArray();