Guest getIndexHtml() method processing login

guestGetIndexHtml.java

	@RouteMethod(
			path="index.html", 
			value = { RequestMethod.GET, RequestMethod.POST },
			lock = @RouteMethod.Lock(type = Type.READ, path = ".."), 
			comment="Renders login form on GET, processes it on POST")
	public Object indexHtml(
			@ContextParameter CDOTransactionHttpServletRequestContext<LoginPasswordCredentials> context, 
			@TargetParameter Guest target,
			@QueryParameter("url") String returnURL,
			@QueryParameter("login") String login,
			@QueryParameter("password") String password) throws Exception {
			
		
		Form loginForm = processLogin(context, returnURL, login, password);
		if (loginForm == null) {
			return Action.NOP;
		}
		
		loginForm
			.action("index.html")
			.method(Method.post)
			.bootstrap().grid().col(Bootstrap.DeviceSize.EXTRA_SMALL, 12)
			.bootstrap().grid().col(Bootstrap.DeviceSize.SMALL, 12)
			.bootstrap().grid().col(Bootstrap.DeviceSize.MEDIUM, 9)
			.bootstrap().grid().col(Bootstrap.DeviceSize.LARGE, 7);
		
		HTMLFactory htmlFactory = getHTMLFactory(context);
		Fragment content = htmlFactory.fragment();		
		content.content(content.getFactory().tag(TagName.h3, getResourceString(context, "logIn")));
		content.content(loginForm);
				
		return renderPage(context, target, getResourceString(context, "logIn"), content, env -> env.remove(PageTemplateTokens.LEFT_PANEL.literal));		
		
	}