CreatePublicKey method is using ToString() incorrectly

[abbatepabloo]

This method:

private static SimplePublicKey CreatePublicKey(byte[] privateKey)
{
    var publicKey = GetPublicKey(privateKey); //new ECPublicKey(ECCurve.Secp256k1.CreatePoint(new BigInteger(privateKey), true), ECCurve.Secp256k1);
    Console.WriteLine($"pubKey: {string.Join(" ", publicKey.Item2)}");
    return new SimplePublicKey
    {
        Key = Convert.ToBase64String(publicKey.ToString().HexStringToByteArray())
    };
}

is using publicKey.ToString() incorrectly because it returns {(System.Byte[], System.Byte[])}