/// <summary>
        /// 当前任务内容完成
        /// </summary>
        private void CompleteCurrentTask()
        {
            _currentTaskContent.Complete();
            _currentTaskContent = null;

            _currentTaskContentIndex += 1;
            if (_currentTaskContentIndex < _taskContentsList.Count)
            {
                BeginCurrentTask();
            }
            else
            {
                End();
            }
        }