Support Enums Description Attribute

First of all thanks for adding enum parameter types, but something is missing, the support for description attribute.

It's very common to use enum description attribute in WPF, as you can't have an enum value with space.

    public enum OrderCancelType
    {
        Buy,
        Sell,
        Limit,
        Stop,
        [Description("Stop Limit")]
        StopLimit,
    }