--- a/net/minecraft/world/item/trading/IMerchant.java
+++ b/net/minecraft/world/item/trading/IMerchant.java
@@ -52,4 +52,6 @@
     }
 
     boolean isClientSide();
+
+    org.bukkit.craftbukkit.inventory.CraftMerchant getCraftMerchant(); // CraftBukkit
 }