/* */package org.impact.stars.control.web.handlers;import org.impact.stars.control.event.StarsEvent;import org.impact.stars.control.exceptions.StarsEventException;import javax.servlet.http.HttpServletRequest;/** * This class is the base interface to flow handlers on the * web tier. **/public interface FlowHandler extends java.io.Serializable {    public void doStart(HttpServletRequest request);    public String processFlow(HttpServletRequest request) throws StarsEventException;    public void doEnd(HttpServletRequest request);}