Paper/patches/api/0337-Add-new-overload-to-PersistentDataContainer-has.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: u9g <winworkswow@gmail.com>
Date: Mon, 3 Jan 2022 23:27:21 -0500
Subject: [PATCH] Add new overload to PersistentDataContainer#has

Adds the new overload: PersistentDataContainer#has(NamespacedKey key)

diff --git a/src/main/java/org/bukkit/persistence/PersistentDataContainer.java b/src/main/java/org/bukkit/persistence/PersistentDataContainer.java
index bf2a957be52d86d07d7d303c86bd3da5fe0a16c0..eebb3da156e2d95efbe22d4afa470b977ce19f10 100644
--- a/src/main/java/org/bukkit/persistence/PersistentDataContainer.java
+++ b/src/main/java/org/bukkit/persistence/PersistentDataContainer.java
@@ -151,4 +151,18 @@ public interface PersistentDataContainer {
      */
     @NotNull
     PersistentDataAdapterContext getAdapterContext();
+
+    // Paper start
+    /**
+     * Returns if the persistent metadata provider has metadata registered
+     * matching the provided key.
+     * 
+     * @param key the key for which existence should be checked.
+     * 
+     * @return whether the key exists
+     * 
+     * @throws NullPointerException if the key to look up is null
+     */
+    boolean has(@NotNull NamespacedKey key);
+    // Paper end
 }