From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Sun, 12 Jun 2022 13:25:52 -0400
Subject: [PATCH] Add missing important BlockStateListPopulator methods

Without these methods it causes exceptions due to these being used by certain feature generators.

diff --git a/src/main/java/org/bukkit/craftbukkit/util/BlockStateListPopulator.java b/src/main/java/org/bukkit/craftbukkit/util/BlockStateListPopulator.java
index 8e6a71c1e8b53faa70b893c76f5bd25f96a5e142..03153abb425acf2d615acc386c91a6524aaa80bf 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/BlockStateListPopulator.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/BlockStateListPopulator.java
@@ -129,4 +129,27 @@ public class BlockStateListPopulator extends DummyGeneratorAccess {
     public DimensionType dimensionType() {
         return this.world.dimensionType();
     }
+    // Paper start
+    @Override
+    public boolean isFluidAtPosition(BlockPos pos, Predicate<FluidState> state) {
+        return state.test(this.getFluidState(pos));
+    }
+
+    @Override
+    public <T extends BlockEntity> java.util.Optional<T> getBlockEntity(BlockPos pos, net.minecraft.world.level.block.entity.BlockEntityType<T> type) {
+        BlockEntity tileentity = this.getBlockEntity(pos);
+
+        return tileentity != null && tileentity.getType() == type ? (java.util.Optional<T>) java.util.Optional.of(tileentity) : java.util.Optional.empty();
+    }
+
+    @Override
+    public BlockPos getHeightmapPos(net.minecraft.world.level.levelgen.Heightmap.Types heightmap, BlockPos pos) {
+        return world.getHeightmapPos(heightmap, pos);
+    }
+
+    @Override
+    public net.minecraft.world.level.storage.LevelData getLevelData() {
+        return world.getLevelData();
+    }
+    // Paper end
 }