/src/main/java/org/htmlunit/html/DomElement.java
if ( prefix == null ) { qualifiedName = null; }
final String qualifiedName; if (namespaceURI == null) { qualifiedName = localName; } else { final String prefix = namespaces_ == null ? null : namespaces_.get(namespaceURI); <extra_id_0> else { qualifiedName = prefix + ':' + localName; } } return qualifiedName; }