System.Runtime.Serialization.Json.DataContractJsonSerializerImpl.WriteJsonNull C# (CSharp) Method

        internal static void WriteJsonNull(XmlWriterDelegator writer)
        {
            writer.WriteAttributeString(null, JsonGlobals.typeString, null, JsonGlobals.nullString); //  prefix //  namespace 
        }

 protected override void WriteNull(XmlWriterDelegator xmlWriter)
 {
     DataContractJsonSerializerImpl.WriteJsonNull(xmlWriter);
 }