Get Entities in a Cuboid Region Async with PaperLib

getEntitiesWithinRegion.java

public static void getEntitiesWithinRegion(Location p1, Location p2, Consumer<List<Entity>> entitiesConsumer) {
        int minX = Math.min(p1.getBlockX(), p2.getBlockX()) >> 4;
        int maxX = Math.max(p1.getBlockX(), p2.getBlockX()) >> 4;
        int minZ = Math.min(p1.getBlockZ(), p2.getBlockZ()) >> 4;
        int maxZ = Math.max(p1.getBlockZ(), p2.getBlockZ()) >> 4;

        List<CompletableFuture> futures = new ArrayList<>();
        List<Entity> entities = new ArrayList<>();
        for (int x = minX; x <= maxX; x++) {
            for (int z = minZ; z <= maxZ; z++) {
                futures.add(PaperLib.getChunkAtAsync(p1.getWorld(), x, z)
                        .thenAccept(chunk -> entities.addAll(Arrays.asList(chunk.getEntities()))));
            }
        }

        CompletableFuture.allOf(futures.toArray(new CompletableFuture<?>[0]))
                .thenAccept(aVoid -> entitiesConsumer.accept(entities));
    }