SpigotのEntityPlayerのLocation以外の設定ができない.

前提・実現したいこと

SpigotでEntityPlayerをNPCとしてスポーンさせようとしているのですが、指定の場所にスポーンさせることはできたのですがそれ以上の設定ができません.

該当のソースコード

Java
1        Location location = player.getLocation();
2
3        MinecraftServer nmsServer = ((CraftServer) Bukkit.getServer()).getServer();
4        WorldServer nmsWorld = ((CraftWorld) player.getWorld()).getHandle();
5        GameProfile gameProfile = new GameProfile(UUID.randomUUID(), "§a§l" + npcName);
6        changeSkin(gameProfile);
7
8        EntityPlayer npc = new EntityPlayer(nmsServer, nmsWorld, gameProfile, new PlayerInteractManager(nmsWorld));
9        Player npcPlayer = npc.getBukkitEntity().getPlayer();
10
11        npcPlayer.setPlayerListName("");
12        npc.setLocation(location.getX(), location.getY(), location.getZ(), player.getLocation().getYaw(), player.getLocation().getPitch());
13        npc.setHeadRotation(player.getLocation().getYaw()); //追記
14        npc.setNoGravity(false); //追記
15        npc.setOnGround(false); //追記
16        npc.setPose(EntityPose.FALL_FLYING); //追記
17        npcPlayer.setGliding(true); //追記
18
19
20        PlayerConnection connection = ((CraftPlayer)player).getHandle().playerConnection;
21        connection.sendPacket(new PacketPlayOutEntityHeadRotation(npc, (byte) ((player.getLocation().getYaw() * 256f)/360f))); //追記
22        connection.sendPacket(new PacketPlayOutPlayerInfo(PacketPlayOutPlayerInfo.EnumPlayerInfoAction.ADD_PLAYER, npc));
23        connection.sendPacket(new PacketPlayOutNamedEntitySpawn(npc));