System.Xml.Serialization.CodeGenerator.InitILGeneration C# (CSharp) Method

        private void InitILGeneration(Type[] argTypes, string[] argNames, bool isStatic)
        {
            _methodEndLabel = _ilGen.DefineLabel();
            this.retLabel = _ilGen.DefineLabel();
            _blockStack = new Stack();
            _whileStack = new Stack();
            _currentScope = new LocalScope();
            _freeLocals = new Dictionary<Tuple<Type, string>, Queue<LocalBuilder>>();
            _argList = new Dictionary<string, ArgBuilder>();
            // this ptr is arg 0 for non static, assuming ref type (not value type) 
            if (!isStatic)
                _argList.Add("this", new ArgBuilder("this", 0, _typeBuilder.BaseType));
            for (int i = 0; i < argTypes.Length; i++)
            {
                ArgBuilder arg = new ArgBuilder(argNames[i], _argList.Count, argTypes[i]);
                _argList.Add(arg.Name, arg);
                _methodBuilder.DefineParameter(arg.Index, ParameterAttributes.None, arg.Name);
            }
        }