--- /home/antony/work/spigot-BuildTools/work/decompile-8eb82bde//net/minecraft/server/SecondaryWorldServer.java	2014-12-03 12:27:34.906671655 +0200
+++ src/main/java/net/minecraft/server/SecondaryWorldServer.java	2014-12-10 18:20:15.598416391 +0200
@@ -4,13 +4,15 @@
 
     private WorldServer a;
 
-    public SecondaryWorldServer(MinecraftServer minecraftserver, IDataManager idatamanager, int i, WorldServer worldserver, MethodProfiler methodprofiler) {
-        super(minecraftserver, idatamanager, new SecondaryWorldData(worldserver.getWorldData()), i, methodprofiler);
+    // CraftBukkit start - Add WorldData, Environment and ChunkGenerator arguments
+    public SecondaryWorldServer(MinecraftServer minecraftserver, IDataManager idatamanager, int i, WorldServer worldserver, MethodProfiler methodprofiler, WorldData worldData, org.bukkit.World.Environment env, org.bukkit.generator.ChunkGenerator gen) {
+        super(minecraftserver, idatamanager, worldData, i, methodprofiler, env, gen);
+        // CraftBukkit end
         this.a = worldserver;
         worldserver.af().a((IWorldBorderListener) (new SecondaryWorldServerInnerClass1(this)));
     }
 
-    protected void a() {}
+    // protected void a() {} // CraftBukkit
 
     public World b() {
         this.worldMaps = this.a.T();