gistfile1.txt

@Listener
    public void onChestBreak(ChangeBlockEvent.Break event) {

        event.getTransactions().stream().filter(e -> e.getFinal().getState().getType().equals(BlockTypes.CHEST)).map(i-> i.getFinal().withContainer(i.toContainer())).forEach(chest -> {
            Extent extent = chest.getLocation().get().getExtent();
            Entity item = event.getTargetWorld().createEntity(EntityTypes.ITEM, chest.getPosition()).get();

            ItemStackSnapshot itemStack = ItemStack.builder().fromBlockSnapshot(chest).build().createSnapshot();
            item.offer(Keys.REPRESENTED_ITEM, itemStack);

            extent.spawnEntity(item, Cause.source(EntitySpawnCause.builder().entity(item).type(SpawnTypes.DROPPED_ITEM).build()).build());
        });

    }