@Override
        public ReferenceEntry<Object, Object> getEntry() {
          return null;
        }

        @Override
        public ValueReference<Object, Object> copyFor(
            ReferenceQueue<Object> queue,
            @CheckForNull Object value,
            ReferenceEntry<Object, Object> entry) {
          return this;
        }

        @Override
        public boolean isLoading() {

        @Override
        public ReferenceEntry<Object, Object> getEntry() {
          return null;
        }

        @Override
        public ValueReference<Object, Object> copyFor(
            ReferenceQueue<Object> queue,
            @CheckForNull Object value,
            ReferenceEntry<Object, Object> entry) {
          return this;
        }

        @Override
        public boolean isLoading() {