}

                @Override
                protected Value<? extends T> calculateOwnValue(ValueConsumer consumer) {
                    return calculateOwnValueNoProducer(consumer);
                }
            };
        }
    }

        return state.convention();
    }

    protected final String describeValue() {
        return value.toString();
    }

    protected Value<? extends T> calculateOwnValueNoProducer(ValueConsumer consumer) {
        try (EvaluationContext.ScopeContext context = openScope()) {
            beforeReadNoProducer(context, consumer);
            return doCalculateValue(context, consumer);
        }