This does something idk.

worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/BlockRegistry.java

@@ -67,4 +67,11 @@ public interface BlockRegistry {
      */
     OptionalInt getInternalBlockStateId(BlockState state);
 
+    /**
+     * Retrieve a block state by its internal ID, if possible.
+     *
+     * @param id The internal ID
+     * @return the block state, if available
+     */
+    BlockState getBlockStateByInternalId(int id);
 }

worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/BundledBlockRegistry.java

@@ -59,4 +59,9 @@ public class BundledBlockRegistry implements BlockRegistry {
         return OptionalInt.empty();
     }
 
+    @Override
+    public BlockState getBlockStateByInternalId(int id) {
+        return null;
+    }
+
 }