}

        List<String> errors = new ArrayList<>();
        pluginValidator.validate(pluginArtifact, pluginDescriptor, errors);

        if (!errors.isEmpty()) {
            throw new InvalidPluginDescriptorException(
                    "Invalid plugin descriptor for " + plugin.getId() + " (" + pluginFile + ")", errors);
        }

        pluginDescriptor.setPluginArtifact(pluginArtifact);

        }

        // reactor failure modes
        if (t instanceof RuntimeException || !(t instanceof Exception)) {
            // fail fast on RuntimeExceptions, Errors and "other" Throwables
            // assume these are system errors and further build is meaningless
            buildContext.getReactorBuildStatus().halt();

     * Perform whatever build-process behavior this <code>Mojo</code> implements.<br>
     * This is the main trigger for the <code>Mojo</code> inside the <code>Maven</code> system, and allows
     * the <code>Mojo</code> to communicate errors.
     *
     * @throws MojoException if a problem occurs
     */
    void execute();

    public void artifactDescriptorInvalid(RepositoryEvent event) {
        // The exception stack trace is not really interesting here
        // but the message itself may be quite details and span multiple
        // lines with errors in it, so only display it at debug level.
        String msg = "The POM for {} is invalid, transitive dependencies (if any) will not be available: {}";
        if (logger.isDebugEnabled()) {

        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",

    public InvalidPluginDescriptorException(String message, List<String> errors) {
        super(toMessage(message, errors));
    }

    private static String toMessage(String message, List<String> errors) {
        StringBuilder buffer = new StringBuilder(256);
        buffer.append(message);
        for (String error : errors) {
            buffer.append(", ").append(error);
        }
        return buffer.toString();

        if (!pluginArtifact.getGroupId().equals(pluginDescriptor.getGroupId())) {
            errors.add("Plugin's descriptor contains the wrong group ID: " + pluginDescriptor.getGroupId());
        }

        if (!pluginArtifact.getArtifactId().equals(pluginDescriptor.getArtifactId())) {

 * <ul>
 *   <li>missing metadata</li>
 *   <li>version range violations</li>
 *   <li>version circular dependencies</li>
 *   <li>missing artifacts</li>
 *   <li>network/transfer errors</li>
 *   <li>file system errors: permissions</li>
 * </ul>
 *
 * TODO carlos: all these possible has*Exceptions and get*Exceptions methods make the clients too

using and distributing the Program and assumes all risks associated with its
exercise of rights under this Agreement, including but not limited to the
risks and costs of program errors, compliance with applicable laws, damage
to or loss of data, programs or equipment, and unavailability or interruption
of operations.

   6. DISCLAIMER OF LIABILITY

        final List<ProfileActivationException> errors = new ArrayList<>();

        List<Profile> profiles = profileSelector.getActiveProfiles(profilesById.values(), context, req -> {
            if (!ModelProblem.Severity.WARNING.equals(req.getSeverity())) {
                errors.add(new ProfileActivationException(req.getMessage(), req.getException()));
            }
        });

        if (!errors.isEmpty()) {
            throw errors.get(0);