Simple instructions on how to add an Async Servlet to an Embedded Tomcat

Main.java

public class Main {
  private static final int PORT = 8085;
  
  public static void main(String args[]){
    Tomcat server = new Tomcat();
    server.setPort(PORT);
    Context ctx = server.addContext("/ctx0", new File(".").getAbsolutePath());
    Wrapper wrapper = Tomcat.addServlet(ctx, "MyAsyncServlet", new MyAsyncServlet());
    // Have to set Async supported on this servlet since we are not using annotations.
    wrapper.setAsyncSupported(true);
    ctx.addServletMapping("/*", "MyAsyncServlet");
    server.start();
    
    // Wait for some condition and then stop
    server.stop();    
  }
  
}
 

There are many examples on the web on how to create a Tomcat Servlet using an embedded Tomcat but none on how to create an async servlet