controller.prepareToScheduleTasks()
        def plan1 = controller.newWorkGraph()
        controller.populateWorkGraph(plan1) { b -> b.addRequestedTasks() }
        controller.finalizeWorkGraph(plan1)
        def executionResult = controller.executeTasks(plan1)
        executionResult.failures.empty

        controller.prepareToScheduleTasks()
        def plan2 = controller.newWorkGraph()

        } else {
            delegate.configuredModel
        }
    }

    override fun prepareToScheduleTasks() {
        if (!maybeLoadFromCache()) {
            delegate.prepareToScheduleTasks()
        } // Else, already done
    }

    override fun scheduleRequestedTasks(selector: EntryTaskSelector?, plan: ExecutionPlan) {
        if (!maybeLoadFromCache()) {

    private val delegate: BuildTreeWorkGraphPreparer,
    private val cache: BuildTreeConfigurationCache
) : BuildTreeWorkGraphPreparer {
    override fun prepareToScheduleTasks(workGraph: BuildTreeWorkGraph.Builder) {
        if (!cache.isLoaded) {
            delegate.prepareToScheduleTasks(workGraph)
        } // else, not required
    }

        when:
        graph.withNewWorkGraph { g ->
            def f = g.scheduleWork { b ->
            }
            f.runWork().rethrow()
        }

        then:
        1 * preparer.prepareToScheduleTasks(_)
        0 * _
    }

    def "finalizes graph for a build when something scheduled"() {
        given:
        def id = Stub(BuildIdentifier)
        def workGraphController = Mock(BuildWorkGraphController)

    }

    @Override
    public void prepareToScheduleTasks() {
        state.maybeTransition(State.Configure, State.TaskSchedule, () -> {
            hasTasks = true;
            modelController.prepareToScheduleTasks();
        });
    }

    @Override
    public BuildWorkPlan newWorkGraph() {

    GradleInternal getConfiguredBuild();

    /**
     * Prepares this build to schedule tasks. May configure the build, if required to later schedule the requested tasks. Can be called multiple times.
     */
    void prepareToScheduleTasks();

    /**
     * Creates a new work plan for this build. This method can be called multiple times to create multiple plans.
     */
    BuildWorkPlan newWorkGraph();

    /**

                    DefaultBuildTreeWorkGraphBuilder graphBuilder = new DefaultBuildTreeWorkGraphBuilder(DefaultBuildTreeWorkGraph.this);
                    workGraphPreparer.prepareToScheduleTasks(graphBuilder);
                    action.accept(graphBuilder);
                    controllers.populateWorkGraphs();
                    context.setResult(new CalculateTreeTaskGraphBuildOperationType.Result() {

        }

        @Override
        GradleInternal getConfiguredBuild() {
            throw new UnsupportedOperationException()
        }

        @Override
        void prepareToScheduleTasks() {
        }

        @Override
        <T> T withToolingModels(Function<? super BuildToolingModelController, T> action) {
            throw new UnsupportedOperationException()
        }