src/main/java/de/thm/arsnova/controller/package-info.java

 /**
- * The 'C' in MVC
+ * Controllers and helper classes which define the public API.
  */
+
 package de.thm.arsnova.controller;

src/main/java/de/thm/arsnova/controller/v2/WelcomeController.java

 package de.thm.arsnova.controller.v2;
 
 import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 
 @Controller("v2WelcomeController")
 @RequestMapping("/v2")
 public class WelcomeController {
-	@RequestMapping(value = "/")
+	@GetMapping(value = "/")
 	public String forwardHome() {
 		return "forward:/";
 	}