SelectedAppointment = new AppointmentDataModel();
                // test trivia
    #pragma warning disable CS0618 // Type or member is obsolete
                SelectedAppointment.Patient = SelectedPatient;
    #pragma warning restore CS0618 // Type or member is obsolete
            }

                SelectedAppointment = new AppointmentDataModel
                {
                    Patient = SelectedPatient
                };