public List<String> onTabComplete(LuckPermsPlugin plugin,Sender sender,List<String> args){
  return Collections.emptyList();
}

public List < String > onTabComplete ( LuckPermsPlugin plugin , Sender sender , List < String > args ) { return Collections . emptyList ( ) ; }
returns a list of suggestions , which are empty by default . sub classes that give tab complete suggestions override this method to give their own list .
