code: public function setJoin($pJoin)
      {
          // Lowercase And/Or
          $pJoin = strtolower($pJoin);
          if (!in_array($pJoin, self::$ruleJoins)) {
              throw new PhpSpreadsheetException('Invalid rule connection for column AutoFilter.');
          }
  
          $this->join = $pJoin;
  
          return $this;
      }
docs: Set AutoFilter Multiple Rules And/Or.
  
  @param string $pJoin And/Or
  
  @throws PhpSpreadsheetException
  
  @return Column