wrong dots validation in field-name mongo >=3.6

public static void main(String[] args) {

  CodecRegistry pojoCodecRegistry = fromRegistries(MongoClient.getDefaultCodecRegistry(),

      fromProviders(PojoCodecProvider.builder().automatic(true).build()));

  MongoClientSettings settings = MongoClientSettings.builder()

      .codecRegistry(pojoCodecRegistry)

      .build();

  com.mongodb.client.MongoClient mongoClient = MongoClients.create(settings);

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

  database = database.withCodecRegistry(pojoCodecRegistry);

  MongoCollection<FieldDotsTester> coll = database.getCollection("dots_test", FieldDotsTester.class);

  coll = coll.withCodecRegistry(pojoCodecRegistry);

  //This line fails

  coll.insertOne(new FieldDotsTester("d.t", "1"));

  if (!coll.find().first().data.keySet().iterator().next().equals("d.t")) {

    throw new RuntimeException();

  }

}

import java.util.HashMap;

import java.util.Map;

public class FieldDotsTester {

  public Map<String, String> data;

  public FieldDotsTester() {}

  public FieldDotsTester(String k, String v) {

    data = new HashMap<>();

    data.put(k, v);

  }

}