}

    void assertHasProjects(String... paths) {
        assert contentXml.FileRef.size() == paths.length
        paths.each { path ->
            assertHasProject(file.parentFile.parentFile.file(path))
        }
    }

    void assertHasProject(File projectFile) {
        assert contentXml.FileRef*.@location*.replaceAll('absolute:', '').contains(projectFile.absolutePath)
    }

    }

    @Override
    void assertContains(IdeProjectFixture project) {
        assert project instanceof XcodeProjectPackage
        contentFile.assertHasProject(project.dir)
    }