docs: function Client(options) {
      if (typeof options === 'object') {
        if (options.AccessKeyId && options.AccessKeySecret) {
          _.assign(this.options, options);
        } else {
          throw new Error('请设置AccessKeyId和AccessKeySecret');
        }
      } else {
        throw new Error('实例化参数类型不正确');
      }
    }