GraphQL\Examples\Blog\Types::image PHP Method

    public static function image()
    {
        return self::$image ?: (self::$image = new ImageType());
    }

 public function resolveType($object, Types $types)
 {
     if ($object instanceof User) {
         return Types::user();
     } else {
         if ($object instanceof Image) {
             return Types::image();
         } else {
             if ($object instanceof Story) {
                 return Types::story();
             }
         }
     }
 }