/// <summary>
 /// 获取请求的参数类型
 /// </summary>
 /// <returns></returns>
 public Type[] GetParameterTypes()
 {
     return(FallbackProxy?.GetParameterTypes() ?? Type.EmptyTypes);
 }
 /// <summary>
 /// 获取请求的参数描述
 /// </summary>
 /// <returns></returns>
 public IDictionary <string, object> GetParameters()
 {
     return(FallbackProxy?.GetParameters() ?? new Dictionary <string, object>());
 }