问如何省略servicestack json序列化程序中的Get only属性？

EN

public class Poco 
{
    public int Id { get; set; }

    public string Name { get; set; }

    [IgnoreDataMember]
    public string IsIgnored { get; set; }
}

[DataContract]
public class Poco 
{
    [DataMember]
    public int Id { get; set; }

    [DataMember]
    public string Name { get; set; }

    public string IsIgnored { get; set; }
}

JsConfig<Poco>.ExcludePropertyNames = new [] { "IsIgnored" };

public class Poco 
{
    public int Id { get; set; }

    public string Name { get; set; }

    public string IsIgnored { get; set; }

    public bool? ShouldSerialize(string fieldName)
    {
        return fieldName == "IsIgnored";
    }
}