Given the following code snippet, what will be the output when mainMethod() is called?

Given the following code snippet, what will be the output when mainMethod() is called?

@EnableAsync
@Configuration
public class AppConfig {}

@Service
public class MyService {
  @Async
  public void asyncMethod() {
    System.out.println("Async method started");
  }

  public void mainMethod() {
    asyncMethod();
    System.out.println("Main method finished");
  }
}