question: returns the length of the route . concode_field_sep String name concode_elem_sep double length concode_elem_sep LinkedList<RoadSegment> roadSegments concode_field_sep RoadSegment add concode_elem_sep Iterator<RoadSegment> iterator concode_elem_sep String getName concode_elem_sep int size concode_elem_sep RoadSegment getOrigin concode_elem_sep int hashCode concode_elem_sep RoadSegment get concode_elem_sep boolean equals concode_elem_sep String toString
target: double function ( ) { return length ; }