/// <summary>
 ///
 /// </summary>
 /// <param name="qiNiuConfig">七牛自定义配置</param>
 public PutPolicyConfig(QiNiuStorageConfig qiNiuConfig)
 {
     _qiNiuConfig = qiNiuConfig;
     _putPolicy   = new PutPolicy();
 }
 /// <summary>
 ///
 /// </summary>
 /// <param name="qiNiuConfig">七牛自定义配置</param>
 public PutPolicyConfig(QiNiuStorageConfig qiNiuConfig)
 {
     _qiNiuConfig = qiNiuConfig;
 }