public function forElement(Element $el)
    {
        // Add help
        $this->model($el)->blockhelp($el->help);

        // Populate the image array with the image instance.  This will create an
        // Image instance from the default value if it doesn't exist.
        $pop = app('former.populator')->all();
        $pop['images'][$this->inputId()] = $el->img();
        app('former.populator')->replace($pop);

        // Support chaining
        return $this;
    }