runelite-api: expose item model information

runelite-api/src/main/java/net/runelite/api/ItemComposition.java

@@ -24,6 +24,8 @@
  */
 package net.runelite.api;
 
+import javax.annotation.Nullable;
+
 /**
  * Represents the template of a specific item type.
  */
@@ -138,4 +140,29 @@ public interface ItemComposition
 	 * default value.
 	 */
 	void resetShiftClickActionIndex();
+
+	/**
+	 * Gets the model ID of the inventory item.
+	 *
+	 * @return the model ID
+	 */
+	int getInventoryModel();
+
+	/**
+	 * Since the client reuses item models, it stores colors that can be replaced.
+	 * This returns what colors the item model will be replaced with.
+	 *
+	 * @return the colors to replace with
+	 */
+	@Nullable
+	short[] getColorToReplaceWith();
+
+	/**
+	 * Since the client reuses item models, it stores textures that can be replaced.
+	 * This returns what textures the item model will be replaced with.
+	 *
+	 * @return the textures to replace with
+	 */
+	@Nullable
+	short[] getTextureToReplaceWith();
 }