public static NamesQueryFilter namesFilter(ColumnFamilyStore cfs, String... names) {
   SortedSet<CellName> s = new TreeSet<CellName>(cfs.getComparator());
   for (String str : names) s.add(cellname(str));
   return new NamesQueryFilter(s);
 }
 public static QueryFilter namesQueryFilter(
     ColumnFamilyStore cfs, DecoratedKey key, CellName... names) {
   SortedSet<CellName> s = new TreeSet<CellName>(cfs.getComparator());
   for (CellName n : names) s.add(n);
   return QueryFilter.getNamesFilter(key, cfs.name, s, System.currentTimeMillis());
 }