protected Container returnContainer(IInventory player, IInventory chest)
            {
                    try
                    {
                            return (Container) obj.getConstructor(IInventory.class, IInventory.class,
                            		TierEnum.class, Integer.TYPE, Integer.TYPE)
                            		.newInstance(player, chest, mainType, xSize, ySize);
                    }
                    catch (Throwable e)
                    {
                            e.printStackTrace();
                    }
                    return null;
            }