then:
        model2.size() == 2
        fixture.assertStateLoaded()
        outputDoesNotContain("Callback before")


        when:
        buildFile << """
            myExtension.message = "updated message for root"
        """

        withIsolatedProjects()
        def model3 = runBuildAction(new FetchCustomModelForEachProject())

        then:
        model3.size() == 2

        buildFile << """
            abstract class MyExtension {
                abstract Property<String> getOther()

                Provider<String> getFoo() {
                    return other
                }
            }

            extensions.create("myext", MyExtension)
            myext {
                conventionMapping.map("foo", { project.provider { "foobar" } })