--- a/net/minecraft/world/level/levelgen/ChunkGeneratorAbstract.java
+++ b/net/minecraft/world/level/levelgen/ChunkGeneratorAbstract.java
@@ -1,3 +1,4 @@
+// keep
 package net.minecraft.world.level.levelgen;
 
 import com.google.common.annotations.VisibleForTesting;
