class Block extends Message {

    public Date getTime() {
        return new Date(getTimeSeconds()*1000);
    }

      Block(NetworkParameters params);
    public  Block(NetworkParameters params, byte[] payloadBytes);
    public  Block(NetworkParameters params, byte[] payloadBytes, boolean parseLazy, boolean parseRetain, int length);
    public  Block(NetworkParameters params, long version, Sha256Hash prevBlockHash, Sha256Hash merkleRoot, long time,
                 long difficultyTarget, long nonce, List<Transaction> transactions);

}