dbal: FetchMode::GROUP, FetchMode::UNIQUE are missing

BC Break Report

Q	A
BC Break	yes
Version	2.7

Summary

My code spits this: PHP Deprecated: Using a PDO fetch mode or their combination (196610 given) is deprecated and will cause an error in Doctrine DBAL 3.0, so I’m trying to upgrade

This should be the part where my code is unfit:

$stmt->fetchAll(\PDO::FETCH_GROUP|\PDO::FETCH_UNIQUE|\PDO::FETCH_ASSOC)

As suggested in the upgrade.MD, I tried to replace it with this:

$stmt->fetchAll(FetchMode::GROUP|FetchMode::UNIQUE|FetchMode::ASSOCIATIVE)

But it doesn’t work, because the FetchMode class doesn’t define neither FetchMode::GROUP nor FetchMode::UNIQUE

What am I missing here?

Thanks!