21w13a

src/main/java/carpet/mixins/EndCityFeatureMixin.java

@@ -3,6 +3,7 @@ package carpet.mixins;
 import carpet.CarpetSettings;
 import com.google.common.collect.Lists;
 import com.mojang.serialization.Codec;
+import net.minecraft.class_6012;
 import net.minecraft.entity.EntityType;
 import net.minecraft.world.biome.SpawnSettings;
 import net.minecraft.world.gen.feature.DefaultFeatureConfig;
@@ -16,7 +17,7 @@ import java.util.List;
 @Mixin(EndCityFeature.class)
 public abstract class EndCityFeatureMixin extends StructureFeature<DefaultFeatureConfig>
 {
-    private static final List<SpawnSettings.SpawnEntry> spawnList = Lists.newArrayList(new SpawnSettings.SpawnEntry(EntityType.SHULKER, 10, 4, 4));
+    private static final class_6012<SpawnSettings.SpawnEntry> spawnList = class_6012.method_34989(new SpawnSettings.SpawnEntry(EntityType.SHULKER, 10, 4, 4));
 
     public EndCityFeatureMixin(Codec<DefaultFeatureConfig> codec)
     {
@@ -24,10 +25,10 @@ public abstract class EndCityFeatureMixin extends StructureFeature<DefaultFeatur
     }
 
     @Override
-    public List<SpawnSettings.SpawnEntry> getMonsterSpawns()
+    public class_6012<SpawnSettings.SpawnEntry> getMonsterSpawns()
     {
         if (CarpetSettings.shulkerSpawningInEndCities)
             return spawnList;
-        return Collections.emptyList();
+        return  SpawnSettings.field_30982;  // empty spawn list
     }
 }