*/
public class ClientBuildEventGenerator implements BuildOperationListener {
    private final BuildOperationListener fallback;
    private final List<Mapper> mappers;
    private final List<BuildOperationTracker> trackers;
    private final Map<OperationIdentifier, Operation> running = new ConcurrentHashMap<>();

        mapper1.detailsType >> Long.class
        mapper2.isEnabled(subscriptions) >> true
        mapper2.trackers >> []
        mapper2.detailsType >> String.class

        def generator = new ClientBuildEventGenerator(consumer, subscriptions, [mapper1, mapper2], fallback)

        when:
        generator.started(operation, startEvent)

        then:
        1 * consumer.findStartedParentId(operation) >> parentId

        }

        listeners.add(createClientBuildEventGenerator(subscriptions, consumer, progressEventConsumer));
        return listeners.build();
    }

    private ClientBuildEventGenerator createClientBuildEventGenerator(BuildEventSubscriptions subscriptions, BuildEventConsumer consumer, ProgressEventConsumer progressEventConsumer) {

Class <org.gradle.tooling.internal.provider.runner.ClientBuildEventGenerator$Operation> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (ClientBuildEventGenerator.java:0)
Class <org.gradle.tooling.internal.provider.runner.ClientBuildEventGenerator> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (ClientBuildEventGenerator.java:0)