/**
     * Creates a new non-finalized state.
     */
    public static <S> ValueState<S> newState(PropertyHost host) {
        return new ValueState.NonFinalizedValue<>(host, Function.identity());
    }

    /**
     * Creates a new non-finalized state.
     *
     * @param copier when the value is mutable, a shallow-copying function should be provided to avoid