private List<String> getLeaderNames(PlayerInfo pi) { List<String> trustedOn = pi.getTrustedOn(); List<String> leaderNames = new ArrayList<>(); for (String islandName : trustedOn) { us.talabrek.ultimateskyblock.api.IslandInfo islandInfo = plugin.getIslandInfo(islandName); if (islandInfo != null && islandInfo.getLeader() != null) { leaderNames.add(islandInfo.getLeader()); } } return leaderNames; }