### Question:
FixedLengthListFieldImpl extends AbstractField { @Override public long getDataLength() { throw new UnsupportedOperationException("Fixed-length lists are not primitives."); } FixedLengthListFieldImpl(final String fieldName, final Structure structure, final int listSize); @Override long getDataLength(); @Override String getDeclaration(); @Override int getListSize(); @Override String getName(); @Override Structure getStructure(); @Override DataType getType();  }### Answer:
@Test(expected = UnsupportedOperationException.class) public void testGetDataLength() { field.getDataLength(); }