System.Reflection.Emit.TypeBuilder.DefineField C# (CSharp) Method

        public System.Reflection.Emit.FieldBuilder DefineField(string fieldName, System.Type type, System.Reflection.FieldAttributes attributes) { throw null; }
        public System.Reflection.Emit.FieldBuilder DefineField(string fieldName, System.Type type, System.Type[] requiredCustomModifiers, System.Type[] optionalCustomModifiers, System.Reflection.FieldAttributes attributes) { throw null; }

        private void DefineClassVaribale(Emit.TypeBuilder typeBuilder, TypeDeclaration _type)
        {
            fieldList = new Dictionary <string, Emit.FieldBuilder>();
            Emit.FieldBuilder classVariable;
            foreach (KeyValuePair <string, Type> para in _type.instanceVariable)
            {
                classVariable = typeBuilder.DefineField(para.Key,
                                                        para.Value,
                                                        FieldAttributes.Private);
                fieldList.Add(para.Key, classVariable);
            }
            foreach (KeyValuePair <string, Type> para in _type.classVariable)
            {
                classVariable = typeBuilder.DefineField(para.Key,
                                                        para.Value,
                                                        FieldAttributes.Private | FieldAttributes.Static);

                fieldList.Add(para.Key, classVariable);
            }

            //mthdIL.Emit(OpCodes.Ldarg_0);
            //mthdIL.Emit(OpCodes.Ldarg_0);
            //mthdIL.Emit(OpCodes.Ldfld, balanceAmtBldr);
            //mthdIL.Emit(OpCodes.Ldarg_2);
            //mthdIL.Emit(OpCodes.Add);
        }