class EnsResolver {

    public static boolean isValidEnsName(String input) {
        return input != null  // will be set to null on new Contract creation
                && (input.contains(".") || !WalletUtils.isValidAddress(input));
    }

    public  EnsResolver(Web3j web3j, long syncThreshold);
    public  EnsResolver(Web3j web3j);

}