@Override
  public void clear(int from, int to)
  {
    ConciseSet toRemove = empty();
    toRemove.fill(from, to);
    this.removeAll(toRemove);
  }
@ Override public void clear ( int from , int to ) { ConciseSet toRemove = empty ( ) ; toRemove . fill ( from , to ) ; this . removeAll ( toRemove ) ; }
{@inheritDoc}