Attaches an action executed when the subscription is cancelled.
The upstream is not cancelled yet, but will be cancelled when the callback completes.
Note that if the callback throws an exception then it will be discarded.
Attaches an action executed when the subscription is cancelled.
The upstream is not cancelled yet, but will be cancelled when the returned Uni completes.
The supplier must not return null.
Note that the result or the failure of the Uni will be discarded.
Parameters:
supplier - the Uni supplier, must not return null.