MissedLastAppointmentCalculation extends AbstractPatientCalculation implements PatientFlagCalculation { @Override public String getFlagMessage() { return "Missed Appointment"; }  @Override String getFlagMessage(); @Override CalculationResultMap evaluate(Collection<Integer> cohort, Map<String, Object> parameterValues, PatientCalculationContext context);  }
@Test public void getFlagMessage() { Assert.assertThat(new MissedLastAppointmentCalculation().getFlagMessage(), notNullValue()); }