protected static function getDumpContent($var, $maxSize = null)
  {
    
    $dump = '<div class="dump_segment_content_main">';
      $dump .= '<div class="dump_variable">';
        $dump .= sprintf('<ul>%s</ul>', static::dumpElement($var, '', $maxSize));
      $dump .= '</div>';
    $dump .= '</div>';
    return $dump;
  }