45a great reg split

src/main/java/carpet/CarpetSettings.java

@@ -12,7 +12,7 @@ import carpet.utils.Messenger;
 import carpet.utils.SpawnChunks;
 import net.minecraft.commands.CommandSourceStack;
 import net.minecraft.core.BlockPos;
-import net.minecraft.core.Registry;
+import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.ServerInterface;
@@ -1005,7 +1005,7 @@ public class CarpetSettings
 
         @Override
         public String validate(CommandSourceStack source, CarpetRule<String> currentRule, String newValue, String string) {
-            Optional<Block> ignoredBlock = Registry.BLOCK.getOptional(ResourceLocation.tryParse(newValue));
+            Optional<Block> ignoredBlock = BuiltInRegistries.BLOCK.getOptional(ResourceLocation.tryParse(newValue));
             if (!ignoredBlock.isPresent()) {
                 Messenger.m(source, "r Unknown block '" + newValue + "'.");
                 return null;