Using System.Web.Services in NET6.0

Question

Please help me how can I use the System.Web.Service in NET6.0. I can't use it anymore, how can I upgrade using it? how can I use the SoapMessage, SoapMessageStage, SoapExtension,LogicalMethodInfo, SoapExtensionAttribute?

this is not working anymore...

using System.Web.Services;
using System.Web.Services.Protocols;