lib/Elastica/Query/Match.php
public function setFieldOperator(string $field, string $operator = self::OPERATOR_OR): self
    {
        return $this->setFieldParam($field, 'operator', $operator);
    }
public function setFieldOperator(string $field, string $operator = self::OPERATOR_OR): self
    {
        return $this->setFieldParam($field, 'operator', $operator);
    }
public function setFieldOperator ( string $ field , string $ operator = self :: OPERATOR_OR ) : self { return $ this -> setFieldParam ( $ field , 'operator' , $ operator ) ; }
Set field operator.

@param string $field
@param string $operator

@return $this
Set field operator .