From 82e5873b4f1b59a32c8d313497d5e3036d2f6f09 Mon Sep 17 00:00:00 2001
From: TheMode <themode@outlook.fr>
Date: Tue, 27 Jul 2021 10:28:06 +0200
Subject: [PATCH] Protocol interfaces to become sealed in the future

---
 src/main/java/net/minestom/server/instance/block/Block.java | 6 ++----
 src/main/java/net/minestom/server/item/Material.java        | 2 ++
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/main/java/net/minestom/server/instance/block/Block.java b/src/main/java/net/minestom/server/instance/block/Block.java
index 42c97571c..cecbeb497 100644
--- a/src/main/java/net/minestom/server/instance/block/Block.java
+++ b/src/main/java/net/minestom/server/instance/block/Block.java
@@ -5,10 +5,7 @@ import net.minestom.server.registry.Registry;
 import net.minestom.server.tag.Tag;
 import net.minestom.server.tag.TagReadable;
 import net.minestom.server.utils.NamespaceID;
-import org.jetbrains.annotations.Contract;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-import org.jetbrains.annotations.Unmodifiable;
+import org.jetbrains.annotations.*;
 import org.jglrxavpok.hephaistos.nbt.NBTCompound;
 
 import java.util.Collection;
@@ -22,6 +19,7 @@ import java.util.function.BiPredicate;
  * <p>
  * Implementations are expected to be immutable.
  */
+@ApiStatus.NonExtendable
 public interface Block extends ProtocolObject, TagReadable, BlockConstants {
 
     /**
diff --git a/src/main/java/net/minestom/server/item/Material.java b/src/main/java/net/minestom/server/item/Material.java
index 84bd7863d..8f9b836df 100644
--- a/src/main/java/net/minestom/server/item/Material.java
+++ b/src/main/java/net/minestom/server/item/Material.java
@@ -4,12 +4,14 @@ import net.minestom.server.instance.block.Block;
 import net.minestom.server.registry.ProtocolObject;
 import net.minestom.server.registry.Registry;
 import net.minestom.server.utils.NamespaceID;
+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.Collection;
 
+@ApiStatus.NonExtendable
 public interface Material extends ProtocolObject, MaterialConstants {
     /**
      * Returns the material registry.