public Driver(string env, string apiKey = null, string merchantKey = null)
{
if (String.IsNullOrEmpty(apiKey))
{
throw new Exception("API Key is required");
}
if (String.IsNullOrEmpty(merchantKey))
{
throw new Exception("Merchant Key is required");
}
Environments.validateEnvironment(env);
this.Env = env;
this.ApiKey = apiKey;
this.MerchantKey = merchantKey;
}
