Add Owner UUID api for AreaEffectCloud (#9364)

patches/api/0299-Missing-Entity-API.patch

@@ -1,7 +1,7 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
 Date: Fri, 28 May 2021 21:06:59 -0400
-Subject: [PATCH] Missing Entity Behavior API
+Subject: [PATCH] Missing Entity API
 
 Co-authored-by: Nassim Jahnke <nassim@njahnke.dev>
 Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
@@ -151,6 +151,31 @@ index 0d88dce9978243a1f995c5fb448c5d71b01136eb..8b1048c94dffd058eb9fd9144f7f59fc
 +    public void setEating(boolean eating);
 +    // Paper end - Horse API
  }
+diff --git a/src/main/java/org/bukkit/entity/AreaEffectCloud.java b/src/main/java/org/bukkit/entity/AreaEffectCloud.java
+index c2096b5344d48d855d031538ec32e0154bd9054d..f3180f6a4910984fc324f4a69eac59e036e32f2b 100644
+--- a/src/main/java/org/bukkit/entity/AreaEffectCloud.java
++++ b/src/main/java/org/bukkit/entity/AreaEffectCloud.java
+@@ -239,4 +239,20 @@ public interface AreaEffectCloud extends Entity {
+      * @param source the {@link ProjectileSource} that threw the LingeringPotion
+      */
+     public void setSource(@Nullable ProjectileSource source);
++
++    // Paper start - owner API
++    /**
++     * Get the entity UUID for the owner of this area effect cloud.
++     *
++     * @return the entity owner uuid or null
++     */
++    @Nullable java.util.UUID getOwnerUniqueId();
++
++    /**
++     * Sets the entity UUID for the owner of this area effect cloud.
++     *
++     * @param ownerUuid the entity owner uuid or null to clear
++     */
++    void setOwnerUniqueId(@Nullable java.util.UUID ownerUuid);
++    // Paper end
+ }
 diff --git a/src/main/java/org/bukkit/entity/Bat.java b/src/main/java/org/bukkit/entity/Bat.java
 index bd73f22ef7e79e1ade69e860e7ae1d3dcd6fc858..b9f8b14d90a758672642222675d2f5664d4f67b4 100644
 --- a/src/main/java/org/bukkit/entity/Bat.java