/**
     * <p>Gets the minimum value for a txout of this size to be considered non-dust by a reference client
     * (and thus relayed). See: CTxOut::IsDust() in the reference client. The assumption is that any output that would
     * consume more than a third of its value in fees is not something the Bitcoin system wants to deal with right now,
     * so we call them "dust outputs" and they're made non standard. The choice of one third is somewhat arbitrary and
     * may change in future.</p>
     *
     * <p>You probably should use {@link com.google.bitcoin.core.TransactionOutput#getMinNonDustValue()} which uses
     * a safe fee-per-kb by default.</p>
     *
     * @param feePerKbRequired The fee required per kilobyte. Note that this is the same as the reference client's -minrelaytxfee * 3
     *                         If you want a safe default, use {@link Transaction#REFERENCE_DEFAULT_MIN_TX_FEE}*3
     */
    public BigInteger getMinNonDustValue(BigInteger feePerKbRequired) {
        // A typical output is 33 bytes (pubkey hash + opcodes) and requires an input of 148 bytes to spend so we add
        // that together to find out the total amount of data used to transfer this amount of value. Note that this
        // formula is wrong for anything that's not a pay-to-address output, unfortunately, we must follow the reference
        // clients wrongness in order to ensure we're considered standard. A better formula would either estimate the
        // size of data needed to satisfy all different script types, or just hard code 33 below.
        final BigInteger size = BigInteger.valueOf(this.bitcoinSerialize().length + 148);
        BigInteger[] nonDustAndRemainder = feePerKbRequired.multiply(size).divideAndRemainder(BigInteger.valueOf(1000));
        return nonDustAndRemainder[1].equals(BigInteger.ZERO) ? nonDustAndRemainder[0] : nonDustAndRemainder[0].add(BigInteger.ONE);
    }

    /**
     * Returns the minimum value for this output to be considered "not dust", i.e. the transaction will be relayable
     * and mined by default miners. For normal pay to address outputs, this is 5460 satoshis, the same as
     * {@link Transaction#MIN_NONDUST_OUTPUT}.
     */
    public BigInteger getMinNonDustValue() {
        return getMinNonDustValue(Transaction.REFERENCE_DEFAULT_MIN_TX_FEE.multiply(BigInteger.valueOf(3)));
    }