code: public function whereBetween($col, $val1, $val2, $and = true, $not = false)
      {
          $bet = sprintf('%sBETWEEN %s AND %s', $not ? 'NOT ' : '', $val1, $val2);
          return $this->where($col, $bet, WhereInterface::SHORT_FORM, $and);
      }
docs: {@inheritDoc}