public void Initialize()
        {
            //这里与 MVC 5 保持一致,只获取所有的属性。
            var sourceProperties = SourceType.GetAllPublicReadableProperties();

            var targetProperties = TargetType.GetAllPublicReadableProperties();


            foreach (PropertyInfo sourcePropertyInfo in sourceProperties)
            {
                if (sourcePropertyInfo.IsDefined(typeof(IgnoreFilterAttribute), true))
                {
                    continue;
                }

                CreatePropertyMap(sourcePropertyInfo, targetProperties);
            }
        }