//Sync
        public virtual StripeCard Create(string customerId, StripeCardCreateOptions createOptions, StripeRequestOptions requestOptions = null)
        {
            var url = SetupUrl(customerId, false);

            return(Mapper <StripeCard> .MapFromJson(
                       Requestor.PostString(this.ApplyAllParameters(createOptions, url, false),
                                            SetupRequestOptions(requestOptions))
                       ));
        }
        //Async
        public virtual async Task <StripeCard> CreateAsync(string customerId, StripeCardCreateOptions createOptions, StripeRequestOptions requestOptions = null, CancellationToken cancellationToken = default(CancellationToken))
        {
            var url = SetupUrl(customerId, false);

            return(Mapper <StripeCard> .MapFromJson(
                       await Requestor.PostStringAsync(this.ApplyAllParameters(createOptions, url, false),
                                                       SetupRequestOptions(requestOptions),
                                                       cancellationToken)
                       ));
        }