question: @ Override protected void sendDispositionHeader ( final OutputStream out ) throws IOException { LOG . trace ( "enter sendDispositionHeader(OutputStream out)" ) ; super . sendDispositionHeader ( out ) ; final String filename = source . getFileName ( ) ; if ( filename != null ) { out . write ( FILE_NAME_BYTES ) ; out . write ( QUOTE_BYTES ) ; out . write ( EncodingUtil . getAsciiBytes ( filename ) ) ; out . write ( QUOTE_BYTES ) ; } }
target:  Write the disposition header to the output stream