}
@Override
public boolean groupAdd(String world, String group, String permission) {
GroupManager gm = perms.getGroupManager();
GroupSet set = gm.getWorldSet(Bukkit.getWorld(world));
if (set.hasGroup(group)) {
Group g = set.getGroup(group);
boolean value = !permission.startsWith("^");
permission = value ? permission : permission.substring(1);
g.addPermission(permission, value, true, true);