@Test
    void requireThatNestedDisjunctionsAreCollapsed() {
        assertSimplified(or(feature("a").inSet("b"),
                feature("c").inSet("d")),
                or(or(feature("a").inSet("b"),
                        feature("c").inSet("d"))));
    }
@author <a href="mailto:magnarn@yahoo-inc.com">Magnar Nedland</a>
predicate-search-core/src/test/java/com/yahoo/search/predicate/optimization/AndOrSimplifierTest.java