PaperMC/nms-patches/InventoryCraftResult.patch

--- a/net/minecraft/server/InventoryCraftResult.java
+++ b/net/minecraft/server/InventoryCraftResult.java
@@ -2,12 +2,50 @@
 
 import java.util.Iterator;
 import javax.annotation.Nullable;
+// CraftBukkit start
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.entity.CraftHumanEntity;
+import org.bukkit.entity.HumanEntity;
+// CraftBukkit end
 
 public class InventoryCraftResult implements IInventory, RecipeHolder {
 
     private final NonNullList<ItemStack> items;
     private IRecipe<?> b;
 
+    // CraftBukkit start
+    private int maxStack = MAX_STACK;
+
+    public java.util.List<ItemStack> getContents() {
+        return this.items;
+    }
+
+    public org.bukkit.inventory.InventoryHolder getOwner() {
+        return null; // Result slots don't get an owner
+    }
+
+    // Don't need a transaction; the InventoryCrafting keeps track of it for us
+    public void onOpen(CraftHumanEntity who) {}
+    public void onClose(CraftHumanEntity who) {}
+    public java.util.List<HumanEntity> getViewers() {
+        return new java.util.ArrayList<HumanEntity>();
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return maxStack;
+    }
+
+    public void setMaxStackSize(int size) {
+        maxStack = size;
+    }
+
+    @Override
+    public Location getLocation() {
+        return null;
+    }
+    // CraftBukkit end
+
     public InventoryCraftResult() {
         this.items = NonNullList.a(1, ItemStack.b);
     }