--- a/net/minecraft/world/Container.java
+++ b/net/minecraft/world/Container.java
@@ -6,8 +6,12 @@
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.Item;
 import net.minecraft.world.item.ItemStack;
+// CraftBukkit start
+import net.minecraft.world.item.crafting.RecipeHolder;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.entity.BlockEntity;
+import org.bukkit.craftbukkit.entity.CraftHumanEntity;
+// CraftBukkit end
 
 public interface Container extends Clearable {
 
@@ -25,9 +29,7 @@
 
     void setItem(int slot, ItemStack stack);
 
-    default int getMaxStackSize() {
-        return 99;
-    }
+    int getMaxStackSize(); // CraftBukkit
 
     default int getMaxStackSize(ItemStack stack) {
         return Math.min(this.getMaxStackSize(), stack.getMaxStackSize());
@@ -91,4 +93,22 @@
 
         return world == null ? false : (world.getBlockEntity(blockposition) != blockEntity ? false : player.canInteractWithBlock(blockposition, (double) range));
     }
+
+    // CraftBukkit start
+    java.util.List<ItemStack> getContents();
+
+    void onOpen(CraftHumanEntity who);
+
+    void onClose(CraftHumanEntity who);
+
+    java.util.List<org.bukkit.entity.HumanEntity> getViewers();
+
+    org.bukkit.inventory.InventoryHolder getOwner();
+
+    void setMaxStackSize(int size);
+
+    org.bukkit.Location getLocation();
+
+    int MAX_STACK = 99;
+    // CraftBukkit end
 }