try {
                ProjectRealmCache.CacheRecord record =
                        projectBuildingHelper.createProjectRealm(project, model3, projectBuildingRequest);

                project.setClassRealm(record.getRealm());
                project.setExtensionDependencyFilter(record.getExtensionArtifactFilter());
            } catch (PluginResolutionException | PluginManagerException | PluginVersionResolutionException e) {

     * without prior notice and must not be used by plugins.
     *
     * @param classRealm The class realm hosting the build extensions of this project, may be {@code null}.
     */
    public void setClassRealm(ClassRealm classRealm) {
        this.classRealm = classRealm;
    }

    /**
     * Gets the project's class realm. This class realm hosts the build extensions of the project.