C# (CSharp) OnSubmitCallBack примеры использования

Пример #1

        public async Task HandleSubmit(QuestionManagerModel question)
        {
            var model = question.Map();

            await OnSubmitCallBack.InvokeAsync(model);
        }

Пример #2

 public async Task HandleSubmit()
 {
     await OnSubmitCallBack.InvokeAsync(model);
 }