question: protected byte [ ] ftpGet ( final String urlString ) { InputStream inputStream = null ; try { final URL url = new URL ( urlString ) ; inputStream = url . openStream ( ) ; return DSSUtils . toByteArray ( inputStream ) ; } catch ( Exception e ) { LOG . warn ( e . getMessage ( ) ) ; } finally { IOUtils . closeQuietly ( inputStream ) ; } return null ; }
target:  This method retrieves data using FTP protocol .