Update to Minecraft 1.19.4

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

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

@@ -0,0 +1,61 @@
+package org.bukkit.entity;
+
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Represents an item display entity.
+ */
+public interface ItemDisplay extends Display {
+
+    /**
+     * Gets the displayed item stack.
+     *
+     * @return the displayed item stack
+     */
+    @Nullable
+    ItemStack getItemStack();
+
+    /**
+     * Sets the displayed item stack.
+     *
+     * @param item the new item stack
+     */
+    void setItemStack(@Nullable ItemStack item);
+
+    /**
+     * Gets the item display transform for this entity.
+     *
+     * Defaults to {@link ItemDisplayTransform#FIXED}.
+     *
+     * @return item display transform
+     */
+    @NotNull
+    ItemDisplayTransform getItemDisplayTransform();
+
+    /**
+     * Sets the item display transform for this entity.
+     *
+     * Defaults to {@link ItemDisplayTransform#FIXED}.
+     *
+     * @param display new display
+     */
+    void setItemDisplayTransform(@NotNull ItemDisplayTransform display);
+
+    /**
+     * Represents the item model transform to be applied to the displayed item.
+     */
+    public enum ItemDisplayTransform {
+
+        NONE,
+        THIRDPERSON_LEFTHAND,
+        THIRDPERSON_RIGHTHAND,
+        FIRSTPERSON_LEFTHAND,
+        FIRSTPERSON_RIGHTHAND,
+        HEAD,
+        GUI,
+        GROUND,
+        FIXED;
+    }
+}