code: def create_single_token(self, *, payer_id, name, identification_number, payment_method, number, expiration_date):
          
          payload = {
              "language": self.client.language.value,
              "command": PaymentCommand.CREATE_TOKEN.value,
              "merchant": {
                  "apiLogin": self.client.api_login,
                  "apiKey": self.client.api_key
              },
              "creditCardToken": {
                  "payerId": payer_id,
                  "name": name,
                  "identificationNumber": identification_number,
                  "paymentMethod": payment_method,
                  "number": number,
                  "expirationDate": expiration_date
              },
              "test": self.client.is_test
          }
          return self.client._post(self.url, json=payload)
docs: Using this feature you can register a customer’s credit card data and get a token sequential number.
  
          Args:
              payer_id:
              name:
              identification_number:
              payment_method:
              number:
              expiration_date:
  
          Returns: