/src/main/java/org/htmlunit/html/DomElement.java
if ( value == null) {
if ( namespaces_ == 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(); if (attrNamespaceURI != null && prefix != null) { <extra_id_0> namespaces_ = new FastHashMap<>(1, 0.5f); } namespaces_.put(attrNamespaceURI, prefix); } } }