@Test
public void testGetLUTShouldReturnNullIfLutDataIsMissing() {

    DicomObject mlut = new BasicDicomObject();
    mlut.putInts(Tag.LUTDescriptor, VR.US, new int[] { 1, 0, 8 });
    mlut.putString(Tag.ModalityLUTSequence, VR.LO, "HU");
    
    DicomObject obj = new BasicDicomObject();
    obj.putNestedDicomObject(Tag.ModalityLUTSequence, mlut);
    
    assertNull(VOIUtils.getLUT(obj, Tag.ModalityLUTSequence));
}