获取带有Java驱动程序的mongoDB中最后插入的文档的ID

public static void main(String[] args) {

    String connectionString = "mongodb+srv://username:password@cluster0.mongodb.net/test?retryWrites=true&w=majority";

    MongoClient mongoClient = new MongoClient(new MongoClientURI(connectionString));

    MongoDatabase database = mongoClient.getDatabase("test");

    MongoCollection<Document> documents = database.getCollection("test");

    Bson match = Aggregates.match(eq("status", "active"));

    Bson unwind = Aggregates.unwind("$document");

    Bson graphLookup = Aggregates.graphLookup(

            "documents",

            new Document("$document"),

            "author",

            "_id",

            "graph",

            new GraphLookup.GraphLookupOptions().depthField("level"));

    Bson addFields = Aggregates.addFields(new Document("graph",

            new Document("$concatArrays", Arrays.asList("$graph", "$lookup"))));

    Bson unwindGraph = Aggregates.unwind("$graph");

    Bson addEdges = Aggregates.addFields(new Document("edges",

            new Document("$concatArrays", Arrays.asList("$edges", "$lookup"))));

    Bson unwindEdges = Aggregates.unwind("$edges");

    Bson addFieldsEdges = Aggregates.addFields(new Document("node", "$node")

            .append("edges", new Document("$concatArrays", Arrays.asList("$edges", "$lookup"))));

    Bson unwindNode = Aggregates.unwind("$node");

    Bson addFieldsNode = Aggregates.addFields(new Document("name", "$name")

            .append("age", "$age"));

    Bson unwindName = Aggregates.unwind("$name");

    Bson addFieldsName = Aggregates.addFields(new Document("full_name", "$full_name"));

    Bson unwindAge = Aggregates.unwind("$age");

    Bson addFieldsAge = Aggregates.addFields(new Document("age", "$age"));

    Bson addDocumentId = Aggregates.addFields(new Document("_id", "$document_id"));

    Bson unwindDocumentId = Aggregates.unwind("$document_id");

    Bson addFieldsDocumentId = Aggregates.addFields(new Document("document_id", "$document_id"));

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(new Document("timestamp", "$timestamp"));

    Bson unwindTimestamp = Aggregates.unwind("$timestamp");

    Bson addFieldsTimestamp = Aggregates.addFields(