public void load(Path file) {
        if (!Files.exists(file)) {
            return;
        }

        try (BufferedReader reader = Files.newBufferedReader(file, StandardCharsets.UTF_8)) {
            String entry;
            while ((entry = reader.readLine()) != null) {
                entry = entry.trim();
                if (entry.isEmpty() || entry.startsWith("#")) {
                    continue;
                }
                loadEntry(entry);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
Gets the most recent username used by a given uuid

@param uuid the uuid to lookup with
@return a username, or null
common/src/main/java/me/lucko/luckperms/common/storage/implementation/file/FileUuidCache.java