From 57acb141570c616be14f664cbb3d67bd1545a2fc Mon Sep 17 00:00:00 2001
From: Bukkit/Spigot <noreply+git-bukkit@papermc.io>
Date: Wed, 6 Mar 2019 19:45:39 +1100
Subject: [PATCH] SPIGOT-4651: MerchantRecipe.setIngredients() allows more than
 2 ingredients

By: md_5 <git@md-5.net>
---
 .../src/main/java/org/bukkit/inventory/MerchantRecipe.java     | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/paper-api/src/main/java/org/bukkit/inventory/MerchantRecipe.java b/paper-api/src/main/java/org/bukkit/inventory/MerchantRecipe.java
index 9a03d20eef..54e29d545d 100644
--- a/paper-api/src/main/java/org/bukkit/inventory/MerchantRecipe.java
+++ b/paper-api/src/main/java/org/bukkit/inventory/MerchantRecipe.java
@@ -43,7 +43,7 @@ public class MerchantRecipe implements Recipe {
     }
 
     public void addIngredient(ItemStack item) {
-        Preconditions.checkState(ingredients.size() < 2, "MerchantRecipe can only have 2 ingredients");
+        Preconditions.checkState(ingredients.size() < 2, "MerchantRecipe can only have maximum 2 ingredients");
         ingredients.add(item.clone());
     }
 
@@ -52,6 +52,7 @@ public class MerchantRecipe implements Recipe {
     }
 
     public void setIngredients(List<ItemStack> ingredients) {
+        Preconditions.checkState(ingredients.size() <= 2, "MerchantRecipe can only have maximum 2 ingredients");
         this.ingredients = new ArrayList<ItemStack>();
         for (ItemStack item : ingredients) {
             this.ingredients.add(item.clone());