How to use

getDisplayname

method

in

net.minecraftforge.event.entity.player.PlayerEvent$NameFormat

@SubscribeEvent(priority = EventPriority.LOW)
public void onPlayerName(PlayerEvent.NameFormat event) {
  if (event.getEntityPlayer() != null && !Configs.disable_factionDisplayChat) {
    IFactionPlayer fp = FactionPlayerHandler.get(event.getEntityPlayer()).getCurrentFactionPlayer();
    IFaction f = fp == null ? null : fp.getDisguisedAs();
    if (f != null) {
      event.setDisplayname(f.getChatColor() + event.getDisplayname() + TextFormatting.RESET);
      if (fp instanceof IVampirePlayer && !fp.isDisguised() && ((IVampirePlayer) fp).isVampireLord()) {
        event.setDisplayname(TextFormatting.RED + "[" + UtilLib.translate("text.vampirism.lord") + "] " + TextFormatting.RESET + event.getDisplayname());
      }
    }
  }
}