cliRequest.classWorld =
                    new ClassWorld("plexus.core", Thread.currentThread().getContextClassLoader());
        }

        ClassRealm coreRealm = cliRequest.classWorld.getClassRealm("plexus.core");
        if (coreRealm == null) {
            coreRealm = cliRequest.classWorld.getRealms().iterator().next();
        }

        List<File> extClassPath = parseExtClasspath(cliRequest);

     * used by plugins.
     *
     * @return The project's class realm or {@code null}.
     */
    public ClassRealm getClassRealm() {
        return classRealm;
    }

    /**
     * Sets the artifact filter used to exclude shared extension artifacts from plugin realms. <strong>Warning:</strong>