public function renderTab($writer)
{
if ($this->getVisible(false) && $this->getPage()->getClientSupportsJavaScript()) {
$writer->addAttribute('id', $this->getClientID() . '_0');
$style = $this->getActive() ? $this->getParent()->getActiveTabStyle() : $this->getParent()->getTabStyle();
$style->addAttributesToRender($writer);
$writer->renderBeginTag($this->getTagName());
$this->renderTabContent($writer);
$writer->renderEndTag();
}
}