* Handles namespace updates, schema location changes, and element conversions.
 */
@Named
@Singleton
@Priority(40)
public class ModelUpgradeStrategy extends AbstractUpgradeStrategy {

    public ModelUpgradeStrategy() {
        // Target model version will be determined from context
    }

    @Override
    public boolean isApplicable(UpgradeContext context) {

 * </ul>
 *
 * <h3>Upgrade Strategies</h3>
 * <p>The tool uses a strategy pattern to handle different types of upgrades:</p>
 * <ul>
 *   <li>{@link org.apache.maven.cling.invoker.mvnup.goals.ModelUpgradeStrategy} - Upgrades POM model versions (4.0.0 → 4.1.0)</li>
 *   <li>{@link org.apache.maven.cling.invoker.mvnup.goals.PluginUpgradeStrategy} - Upgrades plugin versions for Maven 4 compatibility</li>

import static org.mockito.Mockito.when;

/**
 * Unit tests for the {@link ModelUpgradeStrategy} class.
 * Tests Maven model version upgrades and namespace transformations.
 */
@DisplayName("ModelUpgradeStrategy")
class ModelUpgradeStrategyTest {

    private ModelUpgradeStrategy strategy;

    @BeforeEach
    void setUp() {
        strategy = new ModelUpgradeStrategy();
    }

    private Check checkGoal;

    @BeforeEach
    void setUp() {
        // Create real strategy instances for integration testing
        List<UpgradeStrategy> strategies = List.of(
                new ModelUpgradeStrategy(),
                new CompatibilityFixStrategy(),
                new PluginUpgradeStrategy(),
                new InferenceStrategy());