Code review comment for lp:~macslow/unity-notifications/fix-1295762

> Senders of snap notifications are not allowed to affect how long they are
> shown. This behaviour is defined only in the notification service. Thus the
> only way to do that is to ignore the timeout argument.

Jussi probably meant here to say "Senders of regular notifications are not.."

Anyway, we have certain scenarios where we need the snap decisions to never expire (see the bug description) and this branch fixes that.