System.ServiceModel.Description.ContractDescriptionGenerator.GetMessage C# (CSharp) Метод

		static MessageDescription GetMessage (
			OperationDescription od, MethodInfo mi,
			OperationContractAttribute oca, bool isRequest,
			bool isCallback, Type asyncReturnType)
		{
			ContractDescription cd = od.DeclaringContract;
			ParameterInfo [] plist = mi.GetParameters ();
			Type messageType = null;
			string action = isRequest ? oca.Action : oca.ReplyAction;
			MessageContractAttribute mca;

			Type retType = asyncReturnType;
			if (!isRequest && retType == null)
				retType =  mi.ReturnType;

			// If the argument is only one and has [MessageContract]
			// then infer it as a typed messsage
			if (isRequest) {
				int len = mi.Name.StartsWith ("Begin", StringComparison.Ordinal) ? 3 : 1;
				mca = plist.Length != len ? null :
					GetMessageContractAttribute (plist [0].ParameterType);
				if (mca != null)
					messageType = plist [0].ParameterType;
			}
			else {
				mca = GetMessageContractAttribute (retType);
				if (mca != null)
					messageType = retType;
			}

			if (action == null)
				action = String.Concat (cd.Namespace, 
					cd.Namespace.Length == 0 ? "urn:" : cd.Namespace.EndsWith ("/") ? "" : "/", cd.Name, "/",
					od.Name, isRequest ? String.Empty : "Response");

			if (mca != null)
				return CreateMessageDescription (messageType, cd.Namespace, action, isRequest, isCallback, mca);
			return CreateMessageDescription (oca, plist, od.Name, cd.Namespace, action, isRequest, isCallback, retType, mi.ReturnTypeCustomAttributes);
		}