Migrate Carpet Mixin names to mojang mappings

src/main/java/carpet/mixins/Level_fillUpdatesMixin.java

@@ -0,0 +1,33 @@
+package carpet.mixins;
+
+import carpet.CarpetSettings;
+import net.minecraft.core.BlockPos;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.Block;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Constant;
+import org.spongepowered.asm.mixin.injection.ModifyConstant;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(Level.class)
+public abstract class Level_fillUpdatesMixin
+{
+    @ModifyConstant(method = "setBlock(Lnet/minecraft/core/BlockPos;Lnet/minecraft/world/level/block/state/BlockState;II)Z", //setBlockState main
+            constant = @Constant(intValue = 16))
+    private int addFillUpdatesInt(int original) {
+        if (CarpetSettings.impendingFillSkipUpdates.get())
+            return -1;
+        return original;
+    }
+
+    @Redirect(method = "setBlock(Lnet/minecraft/core/BlockPos;Lnet/minecraft/world/level/block/state/BlockState;II)Z", at = @At( //setBlockState main
+            value = "INVOKE",
+            target = "Lnet/minecraft/world/level/Level;blockUpdated(Lnet/minecraft/core/BlockPos;Lnet/minecraft/world/level/block/Block;)V"
+    ))
+    private void updateNeighborsMaybe(Level world, BlockPos blockPos, Block block)
+    {
+        if (!CarpetSettings.impendingFillSkipUpdates.get()) world.blockUpdated(blockPos, block);
+    }
+
+}