ItemStack#editMeta

fixes #5711

Spigot-API-Patches/0307-ItemStack-editMeta.patch

@@ -0,0 +1,32 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Riley Park <riley.park@meino.net>
+Date: Sun, 23 May 2021 05:04:28 -0700
+Subject: [PATCH] ItemStack#editMeta
+
+
+diff --git a/src/main/java/org/bukkit/inventory/ItemStack.java b/src/main/java/org/bukkit/inventory/ItemStack.java
+index 0f8c593ae9bca46081f0b22c2d763a2699175398..08599c42e4f80a7b8306792c5af0c34aa598a7f6 100644
+--- a/src/main/java/org/bukkit/inventory/ItemStack.java
++++ b/src/main/java/org/bukkit/inventory/ItemStack.java
+@@ -542,6 +542,21 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, net.kyor
+         return result.ensureServerConversions(); // Paper
+     }
+ 
++    // Paper start
++    /**
++     * Edits the {@link ItemMeta} of this stack.
++     *
++     * @param consumer the meta consumer
++     */
++    public void editMeta(final @NotNull java.util.function.Consumer<? super ItemMeta> consumer) {
++        final ItemMeta meta = this.getItemMeta();
++        if (meta != null) {
++            consumer.accept(meta);
++            this.setItemMeta(meta);
++        }
++    }
++    // Paper end
++
+     /**
+      * Get a copy of this ItemStack's {@link ItemMeta}.
+      *