minor public function to automate postman export functionality

Author: phpsa

src/Http/Api/Contracts/HasModel.php

@@ -58,6 +58,11 @@ protected function makeModel(): void
 
         $this->builder = $model->newQuery();
     }
+    
+    public function getPostmanModel(): string
+    {
+        return $this->model();
+    }
 
     /**
      * Unguard eloquent model if needed.