public function replaceNode(TemplateEngine $tplEngine, ElementNode $tagNode)
{
$lastTplTag = $tplEngine->getLastTplTag();
if ($lastTplTag === null) {
throw new TemplateEngineException('There is no custom tag that can be followed by an ElseTag');
}
/*if($lastTplTag->isElseable() === false)
throw new TemplateEngineException('The custom tag "' . get_class($lastTplTag) . '" can not be followed by an ElseTag');*/
$phpCode = '<?php else: ?>';
$phpCode .= $tagNode->getInnerHtml();
$phpCode .= '<?php endif; ?>';
$textNode = new TextNode($tplEngine->getDomReader());
$textNode->content = $phpCode;
$tagNode->parentNode->replaceNode($tagNode, $textNode);
$tagNode->parentNode->removeNode($tagNode);
}
