}
        }

        fun visitValue(value: DeclarativeDocument.ValueNode) {
            when (value) {
                is ValueFactoryNode -> {
                    valueFactoryResolution[value] = resolveValueFactory(value)
                    value.values.forEach(::visitValue)
                }
                is DeclarativeDocument.ValueNode.LiteralValueNode -> Unit

        public void calculateExecutionTimeValue(Action<? super ExecutionTimeValue<? extends Iterable<? extends T>>> visitor) {
            ExecutionTimeValue<? extends T> value = provider.calculateExecutionTimeValue();
            visitValue(visitor, value);
        }

        @Override
        public ValueProducer getProducer() {
            return provider.getProducer();
        }

        @Override