public void GetSeekableResponseStreamTest()
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(URL_FILE);
request.Credentials = new NetworkCredential("anonymous", "*****@*****.**");
request.Method = WebRequestMethods.Ftp.DownloadFile;
Stream stream = request.GetSeekableFileStream();
Assert.IsInstanceOfType(stream, typeof(SeekableFtpFileStream));
}