protected function addStory($createdTime, $user, $text, $attachment = false)
    {
        $item = '
            <li>
                <div class="mod-social-user">
                    <img src="' . $user['picture'] . '" alt="' . $user['name'] . '">
                    <div>
                        <span>' . $user['name'] . '</span>
                        <time>' . human_time_diff($createdTime, current_time('timestamp')) . ' ' . __('ago', 'modularity') . '</time>
                    </div>
                </div>
                <div class="mod-social-story">
                    ' . wpautop($text) . '
                </div>
        ';

        if (is_array($attachment)) {
            $item .= $this->addAttachment($attachment);
        }

        $item .= '</li>';

        $this->markup .= apply_filters('Modularity/mod_social/story', $item, $createdTime, $user, $text);
    }