Build build = new Build();
        build.setOutputDirectory("myOutputDirectory");
        model.setBuild(build);
        Build build2 = model.getBuild();
        assertNotNull(build2);
        assertEquals("myOutputDirectory", build2.getOutputDirectory());
        model.setBuild(null);
        assertNull(model.getBuild());
    }

    @Test
    void testEqualsNullSafe() {
        assertNotEquals(null, new Model());

            if (project.hasLifecyclePhase("test-compile")) {
                return new File(project.getBuild().getTestOutputDirectory());
            }
        } else {
            String type = artifact.getProperty("type", "");
            File outputDirectory = new File(project.getBuild().getOutputDirectory());

            // Check if the project is being built during this session, and if we can expect any output.

                }
                for (Resource resource : project.getBuild().getDelegate().getResources()) {
                    project.addSourceRoot(new DefaultSourceRoot(baseDir, ProjectScope.MAIN, resource));
                }
                for (Resource resource : project.getBuild().getDelegate().getTestResources()) {

                .collect(Collectors.toList());
    }

    private static boolean isEmpty(Profile profile) {
        return profile.getActivation() == null
                && profile.getBuild() == null
                && profile.getDependencies().isEmpty()
                && (profile.getDependencyManagement() == null
                        || profile.getDependencyManagement().getDependencies().isEmpty())

            UpgradeContext context, Model effectiveModel, Map<String, PluginUpgrade> pluginUpgrades) {
        Set<String> pluginsNeedingUpgrade = new HashSet<>();

        Build build = effectiveModel.getBuild();
        if (build != null) {
            // Check build/plugins - these are the actual plugins used in the build
            for (Plugin plugin : build.getPlugins()) {

    @Nonnull
    default List<XmlNode> getChildren() {
        return children();
    }

    @Deprecated(since = "4.0.0", forRemoval = true)
    @Nullable
    default XmlNode getChild(String name) {
        return child(name);
    }

    @Deprecated(since = "4.0.0", forRemoval = true)
    @Nullable
    default Object getInputLocation() {
        return inputLocation();
    }

            if (!parameter.isRequired()) {
                continue;
            }

            Object value = null;

            PlexusConfiguration config = configuration.getChild(parameter.getName(), false);
            if (config != null) {
                String expression = config.getValue(null);

                try {
                    value = expressionEvaluator.evaluate(expression);