Java objects not unwrapped in fields expression

[Pikachu920]

Describe the bug
Java objects are not unwrapped in fields expression

To reproduce

import:
  org.bukkit.Bukkit

on script load:
  broadcast field names of Bukkit.getServer() # result is object

Expected behavior
I get the fields belonging to CraftServer

Server information

• skript-mirror: 0.16.1

[16:29:12 ERROR]: #!#!   Skript: 2.2-dev35b (OUTDATED)
[16:29:12 ERROR]: #!#!   Bukkit: 1.8.8-R0.1-SNAPSHOT
[16:29:12 ERROR]: #!#!   Minecraft: 1.8.8
[16:29:12 ERROR]: #!#!   Java: 1.8.0_171 (Java HotSpot(TM) 64-Bit Server VM 25.171-b11)
[16:29:12 ERROR]: #!#!   OS: Windows 10 amd64 10.0