createLiWithExtraField($extraField) {
  if ($extraField->type == 'multipleSelect') {
    $extraOptions = explode(',',$extraField->value);
    
    $html = "<ul>";

    foreach ($extraOptions as $extraOption) {
      $html.='<li class="'.$extraOption.'">'.$extraOption.'</li>';
    }

    $html.='</ul>';
    
    return $html;

  } else
    return $extraField->value; //Return what you want if the extraFiled is not a multiselect : the extrafiled value, false, ...
}