--- a/net/minecraft/world/lighting/LevelBasedGraph.java
+++ b/net/minecraft/world/lighting/LevelBasedGraph.java
@@ -228,4 +228,8 @@
    protected abstract void func_215476_a(long p_215476_1_, int p_215476_3_);
 
    protected abstract int func_215480_b(long p_215480_1_, long p_215480_3_, int p_215480_5_);
+
+   protected int queuedUpdateSize() {
+      return field_215488_c.size();
+   }
 }
