Code review

src/main/java/net/minestom/server/instance/block/BlockHandler.java

@@ -296,15 +296,22 @@ public interface BlockHandler {
      * in order to do not lose the information while saving, and for runtime debugging purpose.
      */
     @ApiStatus.Internal
-    final class Dummy extends BlockHandlerBase {
+    final class Dummy implements BlockHandler {
         private static final Map<String, BlockHandler> DUMMY_CACHE = new ConcurrentHashMap<>();
 
         public static @NotNull BlockHandler get(@NotNull String namespace) {
             return DUMMY_CACHE.computeIfAbsent(namespace, Dummy::new);
         }
 
+        private final NamespaceID namespace;
+
         private Dummy(String name) {
-            super(name);
+            namespace = NamespaceID.from(name);
+        }
+
+        @Override
+        public @NotNull NamespaceID getNamespaceId() {
+            return namespace;
         }
     }
 }

src/main/java/net/minestom/server/instance/block/BlockHandlerBase.java

@@ -1,18 +0,0 @@
-package net.minestom.server.instance.block;
-
-import net.minestom.server.utils.NamespaceID;
-import org.jetbrains.annotations.NotNull;
-
-public class BlockHandlerBase implements BlockHandler {
-
-    private final NamespaceID namespace;
-
-    public BlockHandlerBase(String name) {
-        namespace = NamespaceID.from(name);
-    }
-
-    @Override
-    public @NotNull NamespaceID getNamespaceId() {
-        return namespace;
-    }
-}

src/main/java/net/minestom/server/instance/block/BlockManager.java

@@ -3,6 +3,7 @@ package net.minestom.server.instance.block;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import net.minestom.server.instance.block.rule.BlockPlacementRule;
+import net.minestom.server.utils.NamespaceID;
 import net.minestom.server.utils.validate.Check;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
@@ -27,6 +28,10 @@ public class BlockManager {
         blockHandlerMap.put(namespace, handlerSupplier);
     }
 
+    public void registerHandler(@NotNull NamespaceID namespace, @NotNull Supplier<@NotNull BlockHandler> handlerSupplier) {
+        registerHandler(namespace.toString(), handlerSupplier);
+    }
+
     public @Nullable BlockHandler getHandler(@NotNull String namespace) {
         final var handler = blockHandlerMap.get(namespace);
         return handler != null ? handler.get() : null;