public List<IgfsFileAffinityRange> ranges(){
  if (ranges == null)   return Collections.emptyList();
  return Collections.unmodifiableList(ranges);
}

public List < IgfsFileAffinityRange > ranges ( ) { if ( ranges == null ) return Collections . emptyList ( ) ; return Collections . unmodifiableList ( ranges ) ; }
gets full list of ranges present in this map .
