@Test
    public void testNestedAlternatives() {
        assertMetrics("segmentStarts:6,19,32 proximity:1",
                      "a b c d e f",
                      "a x b x x x a b x x x x x x x x x x x c d x x x x x x x x x x x e f");
        assertMetrics("segmentStarts:6,19,47 proximity:1",
                      "a b c d e f",
                      "a x b x x x a b x x x x x x x x x x x c d x x x x x x x x x x x e x f x x x x x x x x x x x x e f");
    }
Three segments - improving the score on the first should impact the last
searchlib/src/test/java/com/yahoo/searchlib/ranking/features/fieldmatch/test/FieldMatchMetricsTestCase.java