clarify what getEntityId actually returns (#10839)

patches/api/0056-Fix-upstream-javadocs.patch

@@ -381,6 +381,26 @@ index 1e56aef9188487d3e9c737e85025f601ab359a72..92cd35c87bad578c2b714761c93a5b72
           * the portal, it will fly to it before mounting.
           */
          LAND_ON_PORTAL,
+diff --git a/src/main/java/org/bukkit/entity/Entity.java b/src/main/java/org/bukkit/entity/Entity.java
+index 4e1fb0974d061d5bb64899cac576318d2e6f8bf6..539b3527d0c66611e21712f29b90fba939e661e3 100644
+--- a/src/main/java/org/bukkit/entity/Entity.java
++++ b/src/main/java/org/bukkit/entity/Entity.java
+@@ -180,9 +180,13 @@ public interface Entity extends Metadatable, CommandSender, Nameable, Persistent
+     public List<org.bukkit.entity.Entity> getNearbyEntities(double x, double y, double z);
+ 
+     /**
+-     * Returns a unique id for this entity
++     * Returns the network protocol ID for this entity. This is
++     * not to be used as an identifier for the entity except in
++     * network-related operations. Use {@link #getUniqueId()} as
++     * an entity identifier instead.
+      *
+-     * @return Entity id
++     * @return the network protocol ID
++     * @see #getUniqueId()
+      */
+     public int getEntityId();
+ 
 diff --git a/src/main/java/org/bukkit/entity/HumanEntity.java b/src/main/java/org/bukkit/entity/HumanEntity.java
 index fffc478312566bc5c36dbacbdd86341d84d50054..8d97cf229ce1d14232d0342121b5db2230795a1d 100644
 --- a/src/main/java/org/bukkit/entity/HumanEntity.java