annotate initialize method @NotNull

common/addons/command-packs/src/main/java/com/dfsek/terra/addons/commands/packs/PacksCommandAddon.java

@@ -9,6 +9,7 @@ import com.dfsek.terra.addons.manifest.api.monad.Get;
 import com.dfsek.terra.addons.manifest.api.monad.Init;
 import com.dfsek.terra.api.util.function.monad.Monad;
 
+import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -22,7 +23,7 @@ public class PacksCommandAddon implements MonadAddonInitializer {
     private static final Logger logger = LoggerFactory.getLogger(PacksCommandAddon.class);
     
     @Override
-    public Monad<?, Init<?>> initialize() {
+    public @NotNull Monad<?, Init<?>> initialize() {
         return Do.with(
                 Get.eventManager().map(eventManager -> eventManager.getHandler(FunctionalEventHandler.class)),
                 Get.addon(),