private static object GetClosureValue(MemberExpression node)
        {
            object value;

            if (node.Member.MemberType == MemberTypes.Field)
            {
                value = CqlExpressionVisitor.GetFieldValue(node);
            }
            else if (node.Member.MemberType == MemberTypes.Property)
            {
                value = CqlExpressionVisitor.GetPropertyValue(node);
            }
            else
            {
                value = Expression.Lambda(node).Compile().DynamicInvoke();
            }
            return(value);
        }