public function render()
    {
        $reg = $this->registry;
        ?>
        <div class="wrap">
            <h1><?php echo $reg['page_title']; ?></h1>
            <form action="options.php" method="post">
                <?php settings_errors($reg['option_name']) ?>
                <?php settings_fields($reg['option_name']); ?>
                <?php do_settings_sections($reg['option_name']); ?>
                <?php submit_button(); ?>
            </form>
        </div>
        <?php
    }