e.initCause(error);
                    throw e;
                }

                return result;
            } finally {
                Thread.currentThread().setContextClassLoader(oldContextClassLoader);
            }
        }

        ProjectBuildingResult build(
                boolean parent, Artifact artifact, boolean allowStubModel, List<ArtifactRepository> repositories)

        }

        final CoreExports exports = new CoreExports(containerRealm, exportedArtifacts, exportedPackages);

        Thread.currentThread().setContextClassLoader(containerRealm);

        DefaultPlexusContainer container = new DefaultPlexusContainer(cc, new AbstractModule() {
            @Override
            protected void configure() {

    public static void attachToThread(MavenProject currentProject) {
        ClassRealm projectRealm = currentProject.getClassRealm();
        if (projectRealm != null) {
            Thread.currentThread().setContextClassLoader(projectRealm);
        }
    }

    protected static class Clock {
        Instant start;
        Instant end;
        Instant resumed;
        Duration exec = Duration.ZERO;

    return new AdjustablePolicy
    // Permissions j.u.c. needs directly
    (
        new RuntimePermission("modifyThread"),
        new RuntimePermission("getClassLoader"),
        new RuntimePermission("setContextClassLoader"),
        // Permissions needed to change permissions!
        new SecurityPermission("getPolicy"),
        new SecurityPermission("setPolicy"),
        new RuntimePermission("setSecurityManager"),