TinkersConstruct/src/main/java/tconstruct/api/IPlayerExtendedInventoryWrapper.java

package tconstruct.api;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;

public interface IPlayerExtendedInventoryWrapper {
    IInventory getKnapsackInventory(EntityPlayer player);

    IInventory getAccessoryInventory(EntityPlayer player);
}