mongo insertMany

private static void hashMap_Example(DBCollection collection) throws IOException {
         Map<String, Document> documentMap = new HashMap<>();
        Reader reader = Files.newBufferedReader(Paths.get("C:\\Users\\Pepe\\Desktop\\kopiagrafiku.csv"));
        CSVParser csvParser = new CSVParser(reader, CSVFormat.newFormat(';'));
        Document document = new Document("date", "15.09.2019");

        document.append("rodzaj_rozkladu", "powszedni");
        for (CSVRecord record : csvParser) {
            Map<String, Object> documentMapDetail = new HashMap<String, Object>();
            document.append("workNumber", record.get(0));
            if (record.get(0).isEmpty())
                continue;
            document.append("busLine", record.get(1));
            document.append("startTime", record.get(2));
            document.append("endTime", record.get(3));
            documentMap.put("grafik_dzienny", document);
            collection.insert((List<? extends DBObject>) documentMap);
        }
    }