private class TurretLootChancesMenu extends MenuContainerChances {

                TurretLootChancesMenu() {
                    super(LevelMenu.this, true);

                    this.setSize(54);
                    this.setTitle("Place turret loot here");
                }

                @Override
                public Menu newInstance() {
                    return new TurretLootChancesMenu();
                }

                @Override
                protected boolean canEditItem(final MenuClickLocation location, final int slot, final ItemStack clicked, final ItemStack cursor, final InventoryAction action) {
                    return true;
                }

                @Override
                protected ItemStack getDropAt(final int slot) {
                    final Tuple<ItemStack, Double> tuple = this.getTuple(slot);

                    return tuple != null ? tuple.getKey() : NO_ITEM;
                }

                @Override
                protected double getDropChance(final int slot) {
                    final Tuple<ItemStack, Double> tuple = this.getTuple(slot);

                    return tuple != null ? tuple.getValue() : 0;
                }

                private Tuple<ItemStack, Double> getTuple(final int slot) {
                    final List<Tuple<ItemStack, Double>> items = level.getLootChances();

                    return slot < items.size() ? items.get(slot) : null;
                }

                @Override
                protected void onMenuClose(final StrictMap<Integer, Tuple<ItemStack, Double>> items) {
                    settings.setLootChances(level, new ArrayList<>(items.values()));
                }

                @Override
                public boolean allowDecimalQuantities() {
                    return true;
                }
            }