// phase 1
        DefaultModelBuilderResult result = new DefaultModelBuilderResult();

        DefaultModelProblemCollector problems = new DefaultModelProblemCollector(result);

        // read and validate raw model
        Model fileModel = readFileModel(request, problems);
        result.setFileModel(fileModel);

        Model activatedFileModel = activateFileModel(fileModel, request, result, problems);

    // The expressions help a lot, but we need a clean to pick up a directory of POMs, automatically load
    // them into a resolver, create the expression to extract the data to validate the Model, and the URI
    // to validate the properties. We also need a way to navigate from the Tex specification documents to
    // the test in question and vice versa. A little Eclipse plugin would do the trick.

        return false;
    }

    @Override
    public final void validate(
            MavenSession mavenSession,
            MojoDescriptor mojoDescriptor,
            Class<?> mojoClass,
            PlexusConfiguration pomConfiguration,
            ExpressionEvaluator expressionEvaluator) {
        doValidate(mavenSession, mojoDescriptor, mojoClass, pomConfiguration, expressionEvaluator);
    }

        List<BuilderProblem> problems = validator.validate(model);
        assertEquals(0, problems.size());

        Repository repo = org.apache.maven.api.settings.Repository.newInstance(false);
        Settings model2 = Settings.newBuilder()
                .profiles(List.of(prof.withRepositories(List.of(repo))))
                .build();
        problems.clear();
        problems = validator.validate(model2);
        assertEquals(2, problems.size());

        descriptor.setArtifactId("maven-it-plugin");
        descriptor.setVersion("0.1");
        List<String> errors = new ArrayList<>();
        mavenPluginValidator.validate(plugin, descriptor, errors);
        assertTrue(errors.isEmpty());
    }

    @Test
    void testInvalidGroupId() {
        Artifact plugin = new DefaultArtifact(
                "org.apache.maven.its.plugins",

     * file and has not been subjected to inheritance, interpolation or profile/default injection.
     *
     * @param model The model to validate, must not be {@code null}.
     * @param request The model building request that holds further settings, must not be {@code null}.

                    }
                })
                .visit(settings);
    }

    @Override
    public List<BuilderProblem> validate(Settings settings, boolean isProjectSettings) {
        ArrayList<BuilderProblem> problems = new ArrayList<>();
        settingsValidator.validate(settings, isProjectSettings, problems);
        return problems;
    }

    @Override

    public static final MojoDescriptor POST_CLEAN = createMojoDescriptor("post-clean");

    // default (or at least some of them)

    public static final MojoDescriptor VALIDATE = createMojoDescriptor("validate");

    public static final MojoDescriptor INITIALIZE = createMojoDescriptor("initialize");

    public static final MojoDescriptor TEST_COMPILE = createMojoDescriptor("test-compile");

            <configuration>
              <logFile>target/it.properties</logFile>
            </configuration>
            <executions>
              <execution>
                <id>first</id>
                <phase>validate</phase>
                <goals>
                  <goal>reset</goal>
                </goals>
              </execution>
            </executions>
          </plugin>
          <plugin>

    @Inject
    Maven2DependenciesValidator(PluginValidationManager pluginValidationManager) {
        super(pluginValidationManager);
    }

    @Override
    protected void doValidate(
            RepositorySystemSession session,
            Artifact pluginArtifact,
            ArtifactDescriptorResult artifactDescriptorResult) {