How to use

registerPlaceholderHook

method

in

me.clip.placeholderapi.PlaceholderAPI

public boolean hook() {
 return PlaceholderAPI.registerPlaceholderHook(identifier, this);
}

  @Override
  public void init(OCMMain plugin){
    System.out.println("Registering hook...");
    PlaceholderAPI.registerPlaceholderHook("ocm", new PlaceholderHook() {
      @Override
      public String onPlaceholderRequest(Player player, String identifier){
        System.out.println("Hook called for " + player.getName() + " with identifier '" + identifier + "'");
        if(identifier.equals("pvp_mode")){
          return ModuleAttackCooldown.getPVPMode(player).getName();
        }
        return null;
      }
    });
  }
}

@Deprecated
public static boolean registerPlaceholderHook(Plugin plugin, PlaceholderHook placeholderHook) {
 return plugin != null && registerPlaceholderHook(plugin.getName(), placeholderHook);
}

public PlaceholderAPIManager(MageController controller) {
  this.controller = controller;
  if (!PlaceholderAPI.registerPlaceholderHook("magic", this)) {
    controller.getLogger().warning("PlaceholderAPI integration failed");
  } else {
    controller.getLogger().info("PlaceholderAPI integration enabled. Available placeholders:");
    controller.getLogger().info("magic_path, magic_class, magic_wand, magic_spell");
  }
}

public static boolean registerExpansion(PlaceholderExpansion ex) {
 if (registerPlaceholderHook(ex.getIdentifier(), ex)) {
  Bukkit.getPluginManager().callEvent(new ExpansionRegisterEvent(ex));
  return true;
 }
 return false;
}