}

    /**
     * CacheRecord
     */
    class CacheRecord {

        public ClassRealm getRealm() {
            return realm;
        }

        public DependencyFilter getExtensionArtifactFilter() {
            return extensionArtifactFilter;
        }

        private final ClassRealm realm;

        private final DependencyFilter extensionArtifactFilter;

                        projectBuildingHelper.createProjectRealm(project, model, projectBuildingRequest);

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