MavenExecutionRequest copy = DefaultMavenExecutionRequest.copy(original);
        assertNotNull(copy);
        assertNotSame(copy, original);
    }

    @Test
    void testResultWithNullTopologicallySortedProjectsIsEmptyList() {
        MavenExecutionResult result = new DefaultMavenExecutionResult();
        result.setTopologicallySortedProjects(null);
        List<MavenProject> projects = result.getTopologicallySortedProjects();