Timber\Post::convert PHP Method

    public function convert($data, $class)
    {
        if (is_array($data)) {
            $func = __FUNCTION__;
            foreach ($data as &$ele) {
                if (gettype($ele) === 'array') {
                    $ele = $this->{$func}($ele, $class);
                } else {
                    if ($ele instanceof WP_Post) {
                        $ele = new $class($ele);
                    }
                }
            }
        }
        return $data;
    }