mojo = new MojoWrapper(mojoV4);
            } else {
                mojo = mavenPluginManager.getConfiguredMojo(Mojo.class, session, mojoExecution);
            }

            legacySupport.setSession(session);

            // NOTE: DuplicateArtifactAttachmentException is currently unchecked, so be careful removing this try/catch!

            session.setSession(defaultSessionFactory.newSession(session));

            sessionScope.seed(MavenSession.class, session);
            sessionScope.seed(Session.class, session.getSession());
            sessionScope.seed(InternalMavenSession.class, InternalMavenSession.from(session.getSession()));

            legacySupport.setSession(session);

        MavenSession session = new MavenSession(
                getContainer(), repoSession, new DefaultMavenExecutionRequest(), new DefaultMavenExecutionResult());
        session.setSession(new DefaultSessionFactory(
                        getContainer().lookup(RepositorySystem.class),
                        getContainer().lookup(MavenRepositorySystem.class),

        public ProjectBuilder setArtifactId(String artifactId) {
            project.setArtifactId(artifactId);
            return this;
        }

        public ProjectBuilder setVersion(String version) {
            project.setVersion(version);
            return this;
        }

        // Dependencies
        //

        public ProjectBuilder setArtifactId(String artifactId) {
            project.setArtifactId(artifactId);
            return this;
        }

        public ProjectBuilder setVersion(String version) {
            project.setVersion(version);
            return this;
        }

        // Dependencies
        //

        MavenSession mavenSession =
                new MavenSession(container, session, mavenExecutionRequest, new DefaultMavenExecutionResult());
        legacySupport.setSession(mavenSession);
        InternalSession iSession = new DefaultSession(
                mavenSession,
                resolverRepositorySystem,
                null,
                null,

    @Deprecated
    public Map<String, Object> lookupMap(String role) throws ComponentLookupException {
        return container.lookupMap(role);
    }

    public Session getSession() {
        return session;
    }

    public void setSession(Session session) {
        this.session = session;
    }
    /*end[MAVEN4]*/

    }

    @Test
    public void testEscapedVariablePassthrough() throws Exception {
        String var = "${var}";

        MavenProject project = createDefaultProject();
        project.setVersion("1");

        ExpressionEvaluator ee = createExpressionEvaluator(project, new Properties());

        Object value = ee.evaluate("$" + var);

        assertEquals(var, value);
    }

    @Test

        MavenSession session = legacySupport.getSession();

        if (plugin.getVersion() == null) {
            PluginVersionRequest versionRequest = new DefaultPluginVersionRequest(
                    plugin, session.getRepositorySession(), project.getRemotePluginRepositories());
            plugin.setVersion(pluginVersionResolver.resolve(versionRequest).getVersion());
        }

        try {

            managedDependencies = dependencyManagement == null ? null : dependencyManagement.getDependencies();
            MavenSession session = legacySupport.getSession();
            if (session != null) {
                if (session.getProjects() != null) {
                    pomRepositories = session.getProjects().stream()