code: private <T> MongoCollection<T> getLocalCollection(
        final MongoNamespace namespace,
        final Class<T> resultClass,
        final CodecRegistry codecRegistry
    ) {
      return localClient
          .getDatabase(String.format("sync_user_%s", namespace.getDatabaseName()))
          .getCollection(namespace.getCollectionName(), resultClass)
          .withCodecRegistry(codecRegistry);
    }
docs: Returns the local collection representing the given namespace.
  
  @param namespace   the namespace referring to the local collection.
  @param resultClass the {@link Class} that represents documents in the collection.
  @param <T>         the type documents in the collection.
  @return the local collection representing the given namespace.