Doesn't compile on 0.5.2 — CommandSender.getDisplayName() is gone

[andrewkm]

Doesn't build against the current server (0.5.2) - CommandSender doesn't have getDisplayName() anymore, just getUsername() and getUuid().

CodeCreateCommand.java:[36,95] cannot find symbol
  symbol:   method getDisplayName()
  location: interface com.hypixel.hytale.server.core.command.system.CommandSender

Only used in CodeCreateCommand line 36 - swapping it for getUsername() builds fine.