Add DFUs. Currently used by //restore.

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitServerInterface.java

@@ -28,6 +28,7 @@ import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extension.platform.Capability;
 import com.sk89q.worldedit.extension.platform.MultiUserPlatform;
 import com.sk89q.worldedit.extension.platform.Preference;
+import com.sk89q.worldedit.world.DataFixer;
 import com.sk89q.worldedit.world.registry.Registries;
 import org.bukkit.Bukkit;
 import org.bukkit.Server;
@@ -75,6 +76,14 @@ public class BukkitServerInterface implements MultiUserPlatform {
         return -1;
     }
 
+    @Override
+    public DataFixer getDataFixer() {
+        if (plugin.getBukkitImplAdapter() != null) {
+            return plugin.getBukkitImplAdapter().getDataFixer();
+        }
+        return null;
+    }
+
     @Override
     public boolean isValidMobType(String type) {
         final EntityType entityType = EntityType.fromName(type);

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/BukkitImplAdapter.java

@@ -23,6 +23,7 @@ import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.registry.state.Property;
+import com.sk89q.worldedit.world.DataFixer;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
@@ -47,6 +48,14 @@ public interface BukkitImplAdapter {
      */
     int getDataVersion();
 
+    /**
+     * Get a data fixer, or null if not supported
+     *
+     * @return the data fixer
+     */
+    @Nullable
+    DataFixer getDataFixer();
+
     /**
      * Get the block at the given location.
      *

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/BukkitImplLoader.java

@@ -157,7 +157,7 @@ public class BukkitImplLoader {
                 if (BukkitImplAdapter.class.isAssignableFrom(cls)) {
                     return (BukkitImplAdapter) cls.newInstance();
                 } else {
-                    log.warn("Failed to load the Bukkit adapter class '" + className +
+                    log.debug("Failed to load the Bukkit adapter class '" + className +
                             "' because it does not implement " + BukkitImplAdapter.class.getCanonicalName());
                 }
             } catch (ClassNotFoundException e) {