HC compile class error in 8.1.1

What’s the HC boilerplate for Servoy 8+? Boilerplate from Servoy 6 is throwing errors:

<%@ page import = "java.util.*" %>
<%@ page import = "com.servoy.j2db.server.headlessclient.*" %>
<%@ page import = "com.servoy.j2db.util.*" %>

<%
	// grab params
	String solution = request.getParameter("s");
	String form 	= "blank";
	String method 	= request.getParameter("m");
	Object[] args 	= new Object[]{session, request};

	// start servoy headless client
	ISessionBean servoy_hc = (ISessionBean)application.getAttribute("servoy");
	if (servoy_hc == null || !servoy_hc.setMainForm(form)) {
		servoy_hc = HeadlessClientFactory.createSessionBean(request, solution);
		application.setAttribute("servoy_cms",servoy_hc);
	}

	// set form
	boolean ok = servoy_hc.setMainForm(form);
	if (!ok) {
		out.print("Error cannot work on required form");
		return;
	}

	// call servoy method
	String results = (String)servoy_hc.executeMethod(null, method, args);

	// print out results
	out.print(results);
	
%>

Errors:

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: 13 in the jsp file: /endpoint_example2.jsp
ISessionBean cannot be resolved to a type
10: 	Object[] args 	= new Object[]{session, request};
11: 
12: 	// start servoy headless client
13: 	ISessionBean servoy_hc = (ISessionBean)application.getAttribute("servoy");
14: 	if (servoy_hc == null || !servoy_hc.setMainForm(form)) {
15: 		servoy_hc = HeadlessClientFactory.createSessionBean(request, solution);
16: 		application.setAttribute("servoy_cms",servoy_hc);


An error occurred at line: 13 in the jsp file: /endpoint_example2.jsp
ISessionBean cannot be resolved to a type
10: 	Object[] args 	= new Object[]{session, request};
11: 
12: 	// start servoy headless client
13: 	ISessionBean servoy_hc = (ISessionBean)application.getAttribute("servoy");
14: 	if (servoy_hc == null || !servoy_hc.setMainForm(form)) {
15: 		servoy_hc = HeadlessClientFactory.createSessionBean(request, solution);
16: 		application.setAttribute("servoy_cms",servoy_hc);


An error occurred at line: 15 in the jsp file: /endpoint_example2.jsp
HeadlessClientFactory cannot be resolved
12: 	// start servoy headless client
13: 	ISessionBean servoy_hc = (ISessionBean)application.getAttribute("servoy");
14: 	if (servoy_hc == null || !servoy_hc.setMainForm(form)) {
15: 		servoy_hc = HeadlessClientFactory.createSessionBean(request, solution);
16: 		application.setAttribute("servoy_cms",servoy_hc);
17: 	}
18: