--- a/net/minecraft/world/level/LevelReader.java
+++ b/net/minecraft/world/level/LevelReader.java
@@ -19,6 +19,7 @@
 import net.minecraft.world.phys.AABB;
 
 public interface LevelReader extends BlockAndTintGetter, CollisionGetter, BiomeManager.NoiseBiomeSource {
+    @Nullable ChunkAccess getChunkIfLoadedImmediately(int x, int z); // Paper - ifLoaded api (we need this since current impl blocks if the chunk is loading)
     @Nullable
     ChunkAccess getChunk(int chunkX, int chunkZ, ChunkStatus leastStatus, boolean create);
 
