public String getGroupId() {
        if (mojoDescriptor != null) {
            return mojoDescriptor.getPluginDescriptor().getGroupId();
        }

        return plugin.getGroupId();
    }

    public String getArtifactId() {
        if (mojoDescriptor != null) {
            return mojoDescriptor.getPluginDescriptor().getArtifactId();
        }

        return plugin.getArtifactId();
    }

    private final List<Parameter> parameters;

    private final MojoDescriptor mojo;

    public PluginParameterException(MojoDescriptor mojo, List<Parameter> parameters) {
        super(
                mojo.getPluginDescriptor(),
                "The parameters " + format(parameters) + " for goal " + mojo.getRoleHint() + " are missing or invalid");

        this.mojo = mojo;

        this.parameters = parameters;
    }

        super(message, cause);
        pluginGroupId = mojoDescriptor.getPluginDescriptor().getGroupId();
        pluginArtifactId = mojoDescriptor.getPluginDescriptor().getArtifactId();
        pluginVersion = mojoDescriptor.getPluginDescriptor().getVersion();
        goal = mojoDescriptor.getGoal();
    }

                return delegate.getMojoDescriptor().getPluginDescriptor().getPluginDescriptorV4();
            }

            @Override
            public List<Lifecycle> getLifecycles() {
                try {
                    return Collections.unmodifiableList(new ArrayList<>(delegate.getMojoDescriptor()
                            .getPluginDescriptor()
                            .getLifecycleMappings()

                mojoExecution.getMojoDescriptor().getPluginDescriptor().getGroupId());
        assertEquals(
                "maven-resources-plugin",
                mojoExecution.getMojoDescriptor().getPluginDescriptor().getArtifactId());
        assertEquals(
                "0.1", mojoExecution.getMojoDescriptor().getPluginDescriptor().getVersion());
    }

    @Test

 * <tr><td><code>plugin</code></td>            <td>(since Maven 3)</td>
 *                             <td>{@link MojoExecution#getMojoDescriptor()}.{@link MojoDescriptor#getPluginDescriptor()
 *                                 getPluginDescriptor()}</td></tr>
 * <tr><td><code>plugin.*</code></td>          <td></td>               <td></td></tr>
 * <tr><td><code>*</code></td>                 <td></td>               <td>user properties</td></tr>

            return Objects.equals(getPluginDescriptor(), other.getPluginDescriptor())
                    && Objects.equals(getGoal(), other.getGoal());
        }

        return false;
    }

    /** {@inheritDoc} */
    @Override
    public int hashCode() {
        return Objects.hash(getGoal(), getPluginDescriptor());
    }

    /**

        MavenSession session = legacySupport.getSession();

        PluginDescriptor pluginDescriptor;
        try {
            pluginDescriptor = pluginManager.getPluginDescriptor(
                    plugin, session.getCurrentProject().getRemotePluginRepositories(), session.getRepositorySession());

            pluginManager.setupPluginRealm(pluginDescriptor, session, null, null, null);

        this.goal = goal;
        this.pluginDescriptor = pluginDescriptor;
    }

    public String getGoal() {
        return goal;
    }

    public PluginDescriptor getPluginDescriptor() {
        return pluginDescriptor;
    }

    private static String toMessage(String goal, PluginDescriptor pluginDescriptor) {
        StringBuilder buffer = new StringBuilder(256);

        Object result = new PluginParameterExpressionEvaluator(session, exec).evaluate("${plugin}");

        System.out.println("Result: " + result);

        assertSame(
                exec.getMojoDescriptor().getPluginDescriptor(),
                result,
                "${plugin} expression does not return plugin descriptor.");
    }

    @Test
    void testPluginArtifactsExpressionReference() throws Exception {