* Sets the project's class realm. <strong>Warning:</strong> This is an internal utility method that is only public
     * for technical reasons, it is not part of the public API. In particular, this method can be changed or deleted
     * 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}.
     */

        private volatile Map<K, V> delegate;

        LazyMap(Supplier<Map<K, V>> supplier) {
            this.supplier = supplier;
        }

        @Override
        public Set<Entry<K, V>> entrySet() {
            if (delegate == null) {
                synchronized (this) {
                    if (delegate == null) {
                        delegate = supplier.get();
                    }