PortletDriver portletDriver = consumerEnvironment.getPortletDriverRegistry().getPortletDriver(wsrpportlet);
if (sessionContext != null) {
String[] sessions = new String[1];
sessions[0] = new String (sessionContext.getSessionID());
portletDriver.releaseSessions(sessions, user.getUserID());
}
userSession.removeGroupSession(portletDescription.getGroupID());
} catch (WSRPException e) {
this.getLogger().error("session deregister()", e);