@Override
  public void setDistance(Hologram hologram, double distance) {

    List<EntityArmorStand> armorStands = new ArrayList<EntityArmorStand>();
    Location loc = hologram.getLocation();

    for (Object as : hologram.getArmorStands()) armorStands.add((EntityArmorStand) as);

    for (Player p : hologram.getPlayers()) {

      for (int i = 1; i < armorStands.size(); ++i) {

        EntityArmorStand beforeAs = armorStands.get(i - 1);
        EntityArmorStand as = armorStands.get(i);

        int newX = MathHelper.floor(loc.getX() * 32.0D);
        int newY = MathHelper.floor((beforeAs.locY - distance) * 32.0D);
        int newZ = MathHelper.floor(loc.getZ() * 32.0D);

        PacketPlayOutEntityTeleport packet =
            new PacketPlayOutEntityTeleport(
                as.getId(), newX, newY, newZ, (byte) as.yaw, (byte) as.pitch, false);
        ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);

        as.setLocation(as.locX, beforeAs.locY - distance, as.locZ, as.yaw, as.pitch);
      }
    }
  }
  @Override
  public Object addMessage(Hologram hologram, String message) {

    EntityArmorStand lastAs =
        hologram.getArmorStands().size() == 0
            ? null
            : (EntityArmorStand) hologram.getArmorStand(hologram.getArmorStands().size() - 1);
    EntityArmorStand as;

    if (lastAs != null) {
      as = new EntityArmorStand(lastAs.world);
      as.setInvisible(true);
      as.setCustomName(message);
      as.setCustomNameVisible(true);
      as.setSmall(true);
      as.setGravity(false);
      as.setLocation(
          lastAs.locX, lastAs.locY - hologram.getDistance(), lastAs.locZ, lastAs.yaw, lastAs.pitch);

    } else {
      Location loc = hologram.getLocation();

      as = new EntityArmorStand(((CraftWorld) loc.getWorld()).getHandle());
      as.setInvisible(true);
      as.setCustomName(message);
      as.setCustomNameVisible(true);
      as.setSmall(true);
      as.setGravity(false);
      as.setLocation(loc.getX(), loc.getY(), loc.getZ(), loc.getYaw(), loc.getPitch());
    }

    for (Player p : hologram.getPlayers()) {
      PacketPlayOutSpawnEntityLiving packet = new PacketPlayOutSpawnEntityLiving(as);
      ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
    }

    return as;
  }