N/sftp Module
Connection.download()
Method Description: Downloads a file from the remote FTP server.
Returns: file.File Object
Supported Script Types: Server-side scripts For more information, see SuiteScript 2.0 Script Types.
Governance: 100 units
Module: N/sftp Module
Since: 2016.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=Connection.download(options)

// Code Example 1

//Add additional code

//...

var downloadedFile = objConnection.download({

    directory: 'relative/path/to/file',

    filename: 'downloadMe.js'

});

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4618664030.html