/src/main/java/org/htmlunit/html/DomElement.java
if ( namespaceURI != null) {   if ( ( namespaces_) == null) {     namespaces_ = new FastHashMap( 1, 0.5F) ;   }   namespaces_.put( namespaceURI, newAttr.getPrefix( ) ) ; }
[Delete]
if (attributes != null) { attributes_ = new NamedAttrNodeMapImpl(this, isAttributeCaseSensitive(), attributes); for (final DomAttr entry : attributes.values()) { entry.setParentNode(this); final String attrNamespaceURI = entry.getNamespaceURI(); final String prefix = entry.getPrefix(); <extra_id_0> if (namespaces_ == null) { namespaces_ = new FastHashMap<>(1, 0.5f); } namespaces_.put(attrNamespaceURI, prefix); } }