We're using a payment provider called Citypay. They allow us to store cards in a wallet, with continuous auth, so that we can save the customer's cards. So, we won't be using the redirect method inherent to your payment providers, but will instead be using the newly exposed methods for starting and finalising a transaction.

Because of this, we need to be able to access some settings, like IsTestMode and TestApiURL and LicenseKey, etc, so we can call into the API outside of the PaymentProvider itself.

I could of course just use the exposed dictionary. But for now, I'm using a JsonConvertor like this, to convert "1" to true and "0" to false

private CitypayPaymentProviderSettings _settings;
        public CitypayPaymentProviderSettings Settings
        {
            get
            {
                if (_settings == null)
                {
                    var method = _paymentMethodService.GetPaymentMethod(PaymentProviderId);
                    _settings = JsonConvert.DeserializeObject<CitypayPaymentProviderSettings>(
                        JsonConvert.SerializeObject(method.PaymentProviderSettings), new StringToBooleanConverter());

                }
                return _settings;
            }

        }

where

public class StringToBooleanConverter: JsonConverter
    {
        public override bool CanWrite { get { return false; } }

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
        }

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            switch ( reader.Value.ToString().ToLower().Trim() )
            {
                case "true":
                case "yes":
                case "y":
                case "1":
                    return true;
                case "false":
                case "no":
                case "n":
                case "0":
                    return false;
            }

            return new JsonSerializer().Deserialize( reader, objectType );
        }

        public override bool CanConvert(Type objectType)
        {
            if (objectType == typeof(String) || objectType == typeof(Boolean))
            {
                return true;
            }
            return false;
        }
    }

... just in case it helps anyone else.

Cheers Matt,

Tom