returns this node 's parent node , from which this node was generated . concode_field_sep Node parent concode_elem_sep Action action concode_elem_sep double pathCost concode_elem_sep Object state concode_field_sep Object getState concode_elem_sep List<Node> getPathFromRoot concode_elem_sep Action getAction concode_elem_sep String toString concode_elem_sep boolean isRootNode concode_elem_sep double getPathCost
Node function ( ) { return parent ; }