#vulnerable code 
                                @Override
    public Stream<IdObject<U, List<I>>> get() {
        BufferedReader candidatesReader;
        try {
            candidatesReader = new BufferedReader(new FileReader(candidatesPath));
        } catch (FileNotFoundException ex) {
            throw new UncheckedIOException(ex);
        }

        return candidatesReader.lines().parallel().map(line -> {
            CharSequence[] tokens = split(line, '\t', 3);
            final U user = uParser.parse(tokens[0]);
            final List<I> candidates = new ArrayList<>();
            for (CharSequence candidate : split(tokens[1], ',')) {
                candidates.add(iParser.parse(candidate));
            }
            testData.getUserPreferences(user).forEach(iv -> candidates.add(iv.id));
            
            return new IdObject<>(user, candidates);
        });
    } 
                            #location 10 
                            #vulnerability type RESOURCE_LEAK
#fixed code
                                @Override
    public Stream<IdObject<U, List<I>>> get() {
        try (BufferedReader candidatesReader = new BufferedReader(new FileReader(candidatesPath))) {
            return candidatesReader.lines().parallel().map(line -> {
                CharSequence[] tokens = split(line, '\t', 3);
                final U user = uParser.parse(tokens[0]);
                final List<I> candidates = new ArrayList<>();
                for (CharSequence candidate : split(tokens[1], ',')) {
                    candidates.add(iParser.parse(candidate));
                }
                testData.getUserPreferences(user).forEach(iv -> candidates.add(iv.id));

                return new IdObject<>(user, candidates);
            });
        } catch (IOException ex) {
            throw new UncheckedIOException(ex);
        }
    }