public void TestSuccessfulCancelAppointment()
        {
            if (patientAppointmentsPage.IsCancelAppointmentButtonNull())
            {
                Assert.True(true);
                return;
            }
            patientAppointmentsPage.ClickCancelAppointmentButton();

            PatientAppointmentsPage newPatientAppointmentsPage = new PatientAppointmentsPage(driver);

            newPatientAppointmentsPage.Navigate();
            newPatientAppointmentsPage.EnsurePageIsDisplayed();

            Assert.Equal(patientAppointmentsCount - 1, newPatientAppointmentsPage.PatientAppointmentsCount());
        }