MongoManager and ExecutorService

Since there is also an AsyncRepository and asynchronous methods that return CompletableFuture, the MongoManager can also be passed its own ExecutorService that is responsible for executing the CompletableFuture.

Example of MongoManager with ExecutorService:

public class Application {

    public static void main(String[] args) {
        MongoManager manager = new MongoManager(
                    Credentials.of("yourConnectString", "yourDatabase"), 
                    Executors.newSingleThreadExecutor()
            );
    }
}