Don't call AsyncTabCompleteEvent from netty IO thread (#8218)

patches/api/0357-Multi-Block-Change-API.patch

@@ -0,0 +1,38 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Brody Beckwith <brody@beckwith.dev>
+Date: Fri, 14 Jan 2022 00:40:42 -0500
+Subject: [PATCH] Multi Block Change API
+
+
+diff --git a/src/main/java/org/bukkit/entity/Player.java b/src/main/java/org/bukkit/entity/Player.java
+index 78034fcc89ceeba6934569189f24e5a41229d848..6ec49c213c87e9dbf7ebfbdb93f1d993a2639ac5 100644
+--- a/src/main/java/org/bukkit/entity/Player.java
++++ b/src/main/java/org/bukkit/entity/Player.java
+@@ -600,6 +600,27 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
+      */
+     public void sendBlockDamage(@NotNull Location loc, float progress);
+ 
++    // Paper start
++    /**
++     * Send multiple block changes. This fakes a multi block change packet for each
++     * chunk section that a block change occurs. This will not actually change the world in any way.
++     *
++     * @param blockChanges A map of the locations you want to change to their new block data
++     */
++    public default void sendMultiBlockChange(@NotNull java.util.Map<Location, BlockData> blockChanges) {
++        sendMultiBlockChange(blockChanges, false);
++    }
++
++    /**
++     * Send multiple block changes. This fakes a multi block change packet for each
++     * chunk section that a block change occurs. This will not actually change the world in any way.
++     *
++     * @param blockChanges A map of the locations you want to change to their new block data
++     * @param suppressLightUpdates Whether to suppress light updates or not
++     */
++    public void sendMultiBlockChange(@NotNull java.util.Map<Location, BlockData> blockChanges, boolean suppressLightUpdates);
++    // Paper end
++
+     /**
+      * Send the equipment change of an entity. This fakes the equipment change
+      * of an entity for a user. This will not actually change the inventory of