/src/main/java/org/htmlunit/html/HtmlDomTreeWalker.java
final DomNode uncle = getFirstUncleNode( currentNode_) ;final DomNode parent = n.getParentNode( ) ;
final DomNode parent = n.getParentNode ( ) ;
private DomNode getPreviousNode(final DomNode n) { if (n == root_) { return null; } final DomNode left = getEquivalentLogical(n.getPreviousSibling(), true); if (left == null) { <extra_id_0> if (parent == null) { return null; } if (isNodeVisible(parent)) { return parent; }