is CrossProjectConfigurationReportingTaskExecutionGraph -> taskGraph.delegate
        else -> taskGraph
    }

    override fun addTaskExecutionGraphListener(listener: TaskExecutionGraphListener) {
        delegate.addTaskExecutionGraphListener(listener.wrap())
    }

    override fun removeTaskExecutionGraphListener(listener: TaskExecutionGraphListener) {

 * #whenReady(groovy.lang.Closure)} or {@link #addTaskExecutionGraphListener(TaskExecutionGraphListener)}.</p>
 */
public interface TaskExecutionGraph {
    /**
     * <p>Adds a listener to this graph, to be notified when this graph is ready.</p>
     *
     * @param listener The listener to add. Does nothing if this listener has already been added.
     */
    void addTaskExecutionGraphListener(TaskExecutionGraphListener listener);

    /**

            )
        );
    }

    @Override
    public void addTaskExecutionGraphListener(TaskExecutionGraphListener listener) {
        graphListeners.add(
            decorateListener("TaskExecutionGraph.addTaskExecutionGraphListener", listener)
        );
    }

        buildFile << """
    def listener = {
            throw new RuntimeException('broken')
    } as TaskExecutionGraphListener
    gradle.taskGraph.addTaskExecutionGraphListener(listener)
    task a
"""

        when:
        fails()

        then:
        failure.assertHasDescription("broken")
                .assertHasNoCause()

                }
            })
            gradle.taskGraph.addTaskExecutionGraphListener(new TaskExecutionGraphListener() {
                void graphPopulated(TaskExecutionGraph graph) {
                    println "gradle.taskGraph.addTaskExecutionGraphListener(TaskExecutionGraphListener) from $source"
                }
            })
            gradle.taskGraph.whenReady({

            listenerRegistrationListener,
            Stub(ServiceRegistry)
        )
        TaskExecutionGraphListener listener = Mock(TaskExecutionGraphListener)

        when:
        taskGraph.addTaskExecutionGraphListener(listener)
        def finalizedPlan = Stub(FinalizedExecutionPlan)
        taskGraph.populate(finalizedPlan)
        taskGraph.execute(finalizedPlan)

        then:
        1 * listener.graphPopulated(_)

        where:
        statement                                                             | line
        "gradle.taskGraph.whenReady { graph -> graph.hasTask(':x:unknown') }" | 7
        "gradle.taskGraph.addTaskExecutionGraphListener(new MyListener())"    | 4
    }

    def "checking cross-project model access in task graph call `#statement` with #tasksToRun, should succeed: #shouldSucceed"() {
        createDirs("b")