Object details = progressEvent.getDetails();
        createProblemEvent(buildOperationId, details)
            .ifPresent(aggregator::emit);
    }

    private Optional<InternalProblemEventVersion2> createProblemEvent(OperationIdentifier buildOperationId, @Nullable Object details) {
        if (details instanceof DefaultProblemProgressDetails) {

            InternalProblemEvent problemEvent = (InternalProblemEvent) progressEvent;
            return createProblemEvent(problemEvent, descriptor);
        } else if (progressEvent instanceof InternalProblemEventVersion2) {
            InternalProblemEventVersion2 problemEvent = (InternalProblemEventVersion2) progressEvent;
            return createProblemEvent(problemEvent, descriptor);
        }
        return null;
    }