Carbon_Fields\Field\Html_Field::set_html PHP Method

    public function set_html($callback_or_html)
    {
        if (is_callable($callback_or_html)) {
            $this->field_html = call_user_func($callback_or_html);
        } else {
            $this->field_html = $callback_or_html;
        }
        return $this;
    }