SPIGOT-2911: Implement AbstractHorseInventory

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/entity/AbstractHorse.java

@@ -1,5 +1,6 @@
 package org.bukkit.entity;
 
+import org.bukkit.inventory.AbstractHorseInventory;
 import org.bukkit.inventory.InventoryHolder;
 
 /**
@@ -96,4 +97,7 @@ public interface AbstractHorse extends Animals, Vehicle, InventoryHolder, Tameab
      * @param strength jump strength for this horse
      */
     public void setJumpStrength(double strength);
+
+    @Override
+    public AbstractHorseInventory getInventory();
 }

paper-api/src/main/java/org/bukkit/inventory/AbstractHorseInventory.java

@@ -0,0 +1,23 @@
+package org.bukkit.inventory;
+
+import org.bukkit.entity.AbstractHorse;
+
+/**
+ * An interface to the inventory of an {@link AbstractHorse}.
+ */
+public interface AbstractHorseInventory extends Inventory {
+
+    /**
+     * Gets the item in the horse's saddle slot.
+     *
+     * @return the saddle item
+     */
+    ItemStack getSaddle();
+
+    /**
+     * Sets the item in the horse's saddle slot.
+     *
+     * @param stack the new item
+     */
+    void setSaddle(ItemStack stack);
+}

paper-api/src/main/java/org/bukkit/inventory/HorseInventory.java

@@ -3,14 +3,7 @@ package org.bukkit.inventory;
 /**
  * An interface to the inventory of a Horse.
  */
-public interface HorseInventory extends Inventory {
-
-    /**
-     * Gets the item in the horse's saddle slot.
-     *
-     * @return the saddle item
-     */
-    ItemStack getSaddle();
+public interface HorseInventory extends AbstractHorseInventory {
 
     /**
      * Gets the item in the horse's armor slot.
@@ -19,13 +12,6 @@ public interface HorseInventory extends Inventory {
      */
     ItemStack getArmor();
 
-    /**
-     * Sets the item in the horse's saddle slot.
-     *
-     * @param stack the new item
-     */
-    void setSaddle(ItemStack stack);
-
     /**
      * Sets the item in the horse's armor slot.
      *

paper-api/src/main/java/org/bukkit/inventory/LlamaInventory.java

@@ -5,7 +5,7 @@ import org.bukkit.entity.Llama;
 /**
  * An interface to the inventory of a {@link Llama}.
  */
-public interface LlamaInventory extends Inventory {
+public interface LlamaInventory extends AbstractHorseInventory {
 
     /*
      * Gets the item in the llama's decor slot.