Downloads the specified remote file and saves it in the specified location.
- address (Uri)
- String or Uri. Path of the file to download, including file name and host address. Required.
- destinationFileName (String)
- String. File name and path of the downloaded file. Required.
- userName (String)
- String. User name to authenticate. Default is an empty string, "".
- password (String)
- String.Password to authenticate. Default is an empty string, "".