/// <summary> /// Send a post request with header value "User-Agent": "overwrite" /// </summary> /// <param name='operations'> /// The operations group for this extension method. /// </param> /// <param name='userAgent'> /// Send a post request with header value "User-Agent": "overwrite" /// </param> public static void ParamExistingKey(this IHeader operations, string userAgent) { operations.ParamExistingKeyAsync(userAgent).GetAwaiter().GetResult(); }