question: get the list of children of the calling object pass a null parent to construct the root concode_field_sep WPTreeNode parent concode_elem_sep List<WPTreeNode> children concode_elem_sep WPTreeNode root concode_elem_sep NearbyWords nw concode_elem_sep String word concode_field_sep String printQueue concode_elem_sep String getWord concode_elem_sep String toString concode_elem_sep List<String> findPath concode_elem_sep WPTreeNode addChild concode_elem_sep List<String> buildPathToRoot
target: List < WPTreeNode > function ( ) { return this . children ; }