public void BindPhoneNumberToApplication()
        {
            // Bind the phone 1 to the application 1.

            try {
                var voximplant = new VoximplantAPI();

                var result = voximplant.BindPhoneNumberToApplication(
                    phoneId: "1",
                    applicationId: 1L
                    ).Result;

                Console.WriteLine($"Response: {result.ToString()}");
            } catch (Exception e) {
                Console.WriteLine($"Error: {e.Message}");
            }
        }