table/iterator.go
func (s *ConcatIterator) Close() error {
	for _, it := range s.iters {
		if err := it.Close(); err != nil {
			return errors.Wrap(err, "ConcatIterator")
		}
	}
	return nil
}
func (s *ConcatIterator) Close() error {
	for _, it := range s.iters {
		if err := it.Close(); err != nil {
			return errors.Wrap(err, "ConcatIterator")
		}
	}
	return nil
}
func ( s * ConcatIterator ) Close ( ) error { for _ , it := range s . iters { if err := it . Close ( ) ; err != nil { return errors . Wrap ( err , " " ) } } return nil }
// Close implements y.Interface.
Close implements y . Interface .