### Question:
RadiologyStudy extends BaseOpenmrsData { @Override public String toString() { final StringBuilder result = new StringBuilder(); result.append("studyId: ") .append(this.getStudyId()) .append(" studyInstanceUid: ") .append(this.getStudyInstanceUid()); return result.toString(); }  @Override Integer getId(); Integer getStudyId(); RadiologyOrder getRadiologyOrder(); PerformedProcedureStepStatus getPerformedStatus(); String getStudyInstanceUid(); boolean isInProgress(); boolean isCompleted(); boolean isScheduleable(); @Override void setId(Integer studyId); void setStudyId(Integer studyId); void setRadiologyOrder(RadiologyOrder radiologyOrder); void setPerformedStatus(PerformedProcedureStepStatus performedStatus); void setStudyInstanceUid(String studyInstanceUid); @Override String toString();  }### Answer:
@Test public void shouldReturnStringOfStudyWithNullForMembersThatAreNull() throws Exception { RadiologyStudy radiologyStudy = new RadiologyStudy(); assertThat(radiologyStudy.toString(), startsWith("studyId: null studyInstanceUid: null")); }