### Question:
UnsetExpression extends PrimitiveUpdateExpression { public List<Path> getFields() { return fields; } UnsetExpression(List<Path> list); List<Path> getFields(); @Override JsonNode toJson(); static UnsetExpression fromJson(ObjectNode node); @Override int hashCode(); @Override boolean equals(Object obj);  }### Answer:
@Test public void testGetFields() { List<Path> expResult = Arrays.asList(Path.EMPTY); UnsetExpression instance = new UnsetExpression(expResult); List<Path> result = instance.getFields(); assertEquals(expResult, result); }