/src/main/java/org/htmlunit/html/HtmlElement.java
final String attValue = next.getAttribute( attributeName) ;final String oldAttributeValue = getAttribute( qualifiedName) ;
final String oldAttributeValue = getAttribute ( qualifiedName ) ;
final boolean notifyMutationObservers) { if (null == getHtmlPageOrNull()) { super.setAttributeNS(namespaceURI, qualifiedName, attributeValue, notifyAttributeChangeListeners, notifyMutationObservers); return; } <extra_id_0> final HtmlPage htmlPage = (HtmlPage) getPage(); final boolean mappedElement = isAttachedToPage() && HtmlPage.isMappedElement(htmlPage, qualifiedName); if (mappedElement) { htmlPage.removeMappedElement(this); }