private Set<PlayerClass> getAvailableSubClasses(L2Player player, boolean isNew)
{
final int charClassId = player.getBaseClassId();
final Race npcRace = getVillageMasterRace();
final ClassType npcTeachType = getVillageMasterTeachType();
PlayerClass currClass = PlayerClass.values()[charClassId];// .valueOf(charClassName);
/**
* If the race of your main class is Elf or Dark Elf, you may not select
* each class as a subclass to the other class, and you may not select
* Overlord and Warsmith class as a subclass.