MinecraftForge/src/main/java/net/minecraftforge/items/IItemHandlerModifiable.java

/*
 * Minecraft Forge
 * Copyright (c) 2016-2021.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation version 2.1
 * of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

package net.minecraftforge.items;

import net.minecraft.world.item.ItemStack;

import javax.annotation.Nonnull;

public interface IItemHandlerModifiable extends IItemHandler
{
    /**
     * Overrides the stack in the given slot. This method is used by the
     * standard Forge helper methods and classes. It is not intended for
     * general use by other mods, and the handler may throw an error if it
     * is called unexpectedly.
     *
     * @param slot  Slot to modify
     * @param stack ItemStack to set slot to (may be empty).
     * @throws RuntimeException if the handler is called in a way that the handler
     * was not expecting.
     **/
    void setStackInSlot(int slot, @Nonnull ItemStack stack);
}