question: private void updateFileSizeAndSignature ( ) throws Exception { for ( String filename : files ) { File file = new File ( folder + "/" + filename ) ; prop . put ( "file-size." + filename , Long . toString ( file . length ( ) ) ) ; String fullFilename = folder + "/" + filename ; String signature = signer . sign ( fullFilename ) ; prop . put ( "file-signature." + filename , signature ) ; } }
target:  Update the file size and signature sections