taskGraphOps[0].parentId == treeTaskGraphOps[0].id
        taskGraphOps[1].displayName == "Calculate task graph (:buildC)"
        taskGraphOps[1].details.buildPath == ":buildC"
        taskGraphOps[1].parentId == treeTaskGraphOps[0].id
        taskGraphOps[2].displayName == "Calculate task graph"
        taskGraphOps[2].details.buildPath == ":"
        taskGraphOps[2].parentId == treeTaskGraphOps[1].id

    }

    SerializedOperationStart(Map<String, ?> map) {
        this.id = ((Integer) map.get("id")).longValue();
        Integer parentId = (Integer) map.get("parentId");
        this.parentId = parentId == null ? null : parentId.longValue();
        this.displayName = (String) map.get("displayName");
        this.startTime = (Long) map.get("startTime");
        this.details = map.get("details");

            OperationIdentifier parentId = buildOperation.getParentId();

            if (parentId != null) {
                if (active.containsKey(parentId)) {
                    parents.put(id, parentId);
                } else {
                    parentId = parents.get(parentId);
                    if (parentId != null) {
                        parents.put(id, parentId);
                    }
                }

        this.parentId = parentId;
    }

    public CompositeIdGenerator.CompositeId getParentId() {
        return parentId;
    }

    @Override
    public String getClassName() {
        return className;
    }

    @Override
    public String getMethodName() {
        return getName();
    }

    @Override
    public String getDisplayName() {
        return displayName;
    }

    @Override

    private final String displayName;
    private final OperationIdentifier parentId;

    public DefaultOperationDescriptor(OperationIdentifier id, String name, String displayName, OperationIdentifier parentId) {
        this.id = id;
        this.name = name;
        this.displayName = displayName;
        this.parentId = parentId;
    }

    @Override
    public OperationIdentifier getId() {
        return id;

        loadOps.size() == 2
        loadOps[0].displayName == "Load build"
        loadOps[0].details.buildPath == ":"
        loadOps[0].parentId == root.id
        loadOps[1].displayName == "Load build (:buildB)"
        loadOps[1].details.buildPath == ":buildB"
        loadOps[1].parentId == resolve.id

        def buildIdentifiedEvents = operations.progress(BuildIdentifiedProgressDetails)
        buildIdentifiedEvents.size() == 2

    def startConfigureRootBuild(Long id, Long parentId, int totalProgress) {
        return start(id, parentId, BuildOperationCategory.CONFIGURE_ROOT_BUILD, totalProgress)
    }

    def startConfigureBuild(Long id, Long parentId, int totalProgress) {
        return start(id, parentId, BuildOperationCategory.CONFIGURE_BUILD, totalProgress)
    }

    def startConfigureProject(Long id, Long parentId) {

            assert event.progressOperationId != null
            parentId = event.progressOperationId
        }
        1 * progressListener.started(!null) >> { ProgressStartEvent event ->
            assert event.description == "child"
            assert event.progressOperationId != parentId
            assert event.parentProgressOperationId == parentId
        }
    }

    def "can specify the parent of an operation"() {

    private final String taskPath;
    private final OperationIdentifier parentId;
    private final Set<InternalOperationDescriptor> dependencies;
    private final InternalPluginIdentifier originPlugin;

    public DefaultTaskDescriptor(OperationIdentifier id, String taskIdentityPath, String taskPath, String displayName, OperationIdentifier parentId, Set<InternalOperationDescriptor> dependencies, InternalPluginIdentifier originPlugin) {

    private final OperationIdentifier id;
    private final OperationIdentifier parentId;

    public DefaultBuildOperationRef(@Nullable OperationIdentifier id, @Nullable OperationIdentifier parentId) {
        this.id = id;
        this.parentId = parentId;
    }

    @Override
    public OperationIdentifier getId() {
        return id;
    }

    @Override