At a minimum, help text should note this. This is true for things like addwitnessaddress especially.
});
        std::string txid = find_value(o, "txid").get_str();
        if (!IsHex(txid))
            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, expected hex txid");
        int nOutput = find_value(o, "vout").get_int();
        if (nOutput < 0)
            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, vout must be positive");
        COutPoint outpt(uint256S(txid), nOutput);
        if (fUnlock)
            pwallet->UnlockCoin(outpt);
        else
            pwallet->LockCoin(outpt);
    }
    return true;
}
UniValue listlockunspent(const JSONRPCRequest& request)
{
    CWallet * const pwallet = GetWalletForJSONRPCRequest(request);
    if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
        return NullUniValue;
    }
    if (request.fHelp || request.params.size() > 0)
        throw std::runtime_error(
            "listlockunspent\n"
            "\nReturns list of temporarily unspendable outputs.\n"
            "See the lockunspent call to lock and unlock transactions for spending.\n"
            "\nResult:\n"
            "[\n"
            "  {\n"
            "    \"txid\" : \"transactionid\",     (string) The transaction id locked\n"