/src/main/java/org/htmlunit/html/DomNodeIterator.java
child = rightSibling.getFirstChild( ) ;
child = node.getFirstChild ( ) ;
private static DomNode getChild(final DomNode node, final boolean lookLeft) { if (node == null) { return null; } final DomNode child; if (lookLeft) { <extra_id_0> } else { child = node.getLastChild(); } return child; }