private final Supplier<OperationIdentifier> operationIdentifierSupplier;
    private final AggregatingProblemConsumer aggregator;

    ProblemsProgressEventConsumer(ProgressEventConsumer progressEventConsumer, Supplier<OperationIdentifier> operationIdentifierSupplier, AggregatingProblemConsumer aggregator) {
        super(progressEventConsumer);
        this.operationIdentifierSupplier = operationIdentifierSupplier;