World Teleportation

How do I make it if someone presses a FormApi button it teleports them to the "Default Spawn Level of a certain world"
What code to I put into my "Case 0:" to make it teleport???

 

PHP:

$f = function (Player $player, $data = null) {
                            switch ($data) {
                                case 0:
                                  $player->teleport($this->getServer()->getDefaultLevel()->getSpawn());
                                    break;
                            }
                        };

Spoiler: Extra

If I was you i'd use pmforms instead
https://github.com/dktapps-pm-pl/pmforms/tree/master/src/dktapps/pmforms
https://github.com/dktapps-pm-pl/pmforms-demo/tree/master/src/dktapps/pmforms_demo

 

No I want to be able to teleport to a different worlds default level spawn point

 

getLevelByName("Name") instead of DefaultLevel

 

Note: $player is the player variable

PHP:

$player->teleport($this->getServer()->getLevelByName("YourWorld")->getSafeSpawn());