System.Xml.Serialization.XmlSerializationILGen.GenerateBaseSerializer C# (CSharp) Method

        internal string GenerateBaseSerializer(string baseSerializer, string readerClass, string writerClass, CodeIdentifiers classes)
        {
            baseSerializer = CodeIdentifier.MakeValid(baseSerializer);
            baseSerializer = classes.AddUnique(baseSerializer, baseSerializer);

            TypeBuilder baseSerializerTypeBuilder = CodeGenerator.CreateTypeBuilder(
                _moduleBuilder,
                CodeIdentifier.GetCSharpName(baseSerializer),
                TypeAttributes.Public | TypeAttributes.Abstract | TypeAttributes.BeforeFieldInit,
                typeof(XmlSerializer),
                Array.Empty<Type>());

            ConstructorInfo readerCtor = CreatedTypes[readerClass].GetConstructor(
               CodeGenerator.InstanceBindingFlags,
               Array.Empty<Type>()
               );
            ilg = new CodeGenerator(baseSerializerTypeBuilder);
            ilg.BeginMethod(typeof(XmlSerializationReader),
                "CreateReader",
                Array.Empty<Type>(),
                Array.Empty<string>(),
                CodeGenerator.ProtectedOverrideMethodAttributes);
            ilg.New(readerCtor);
            ilg.EndMethod();

            ConstructorInfo writerCtor = CreatedTypes[writerClass].GetConstructor(
               CodeGenerator.InstanceBindingFlags,
               Array.Empty<Type>()
               );
            ilg.BeginMethod(typeof(XmlSerializationWriter),
                "CreateWriter",
                Array.Empty<Type>(),
                Array.Empty<string>(),
                CodeGenerator.ProtectedOverrideMethodAttributes);
            ilg.New(writerCtor);
            ilg.EndMethod();

            baseSerializerTypeBuilder.DefineDefaultConstructor(
                MethodAttributes.Family | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName);
            Type baseSerializerType = baseSerializerTypeBuilder.CreateTypeInfo().AsType();
            CreatedTypes.Add(baseSerializerType.Name, baseSerializerType);

            return baseSerializer;
        }