public static CreateObject CreateConstructorMethod(Type objType, TypeInfo objTypeInfo = null)
        {
            CreateObject c;
            if (objTypeInfo == null)
                objTypeInfo = objType.GetTypeInfo();

            var n = objTypeInfo.Name + ".ctor";
            if(objTypeInfo.IsClass)
            {
                var dynMethod = new DynamicMethod(n, objType, Type.EmptyTypes);
                var ilGen = dynMethod.GetILGenerator();
                var ct = objTypeInfo.GetConstructor(Type.EmptyTypes)
                    ?? objTypeInfo.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance, null, Type.EmptyTypes, null);
                if (ct == null)
                    return null;
                ilGen.Emit(OpCodes.Newobj, ct);
                ilGen.Emit(OpCodes.Ret);
                c = (CreateObject)dynMethod.CreateDelegate(typeof(CreateObject));
            }
            else
            {
                var dynMethod = new DynamicMethod(n, typeof(object), null, objType);
                var ilGen = dynMethod.GetILGenerator();
                var lv = ilGen.DeclareLocal(objType);
                ilGen.Emit(OpCodes.Ldloca_S, lv);
                ilGen.Emit(OpCodes.Initobj, objType);
                ilGen.Emit(OpCodes.Ldloc_0);
                ilGen.Emit(OpCodes.Box, objType);
                ilGen.Emit(OpCodes.Ret);
                c = (CreateObject)dynMethod.CreateDelegate(typeof(CreateObject));
            }

            return c;
        }