### Question:
CommonNerTokenTransformers { public static TokenTransformer getMorphologyContiguousNumbersGroupedOrRejectedTransformer() { return morphologyContiguousNumbersGroupedOrRejected; }  static TokenTransformer getLowerCaseTransformer(); static TokenTransformer getMorphologyUpperLowerNumberTransformer(); static TokenTransformer getMorphologyUpperLowerNumberNonContiguousTransformer(); static TokenTransformer getMorphologyContiguousNumbersGroupedOrRejectedTransformer(); static TokenTransformer getEnglishVowelsTransformer();  }### Answer:
@Test public void testMorphologyContiguousNumbersGroupedOrRejectedTransformer() { TokenTransformer transformer = CommonNerTokenTransformers.getMorphologyContiguousNumbersGroupedOrRejectedTransformer(); assertEquals(null, transformer.transform("")); assertEquals(null, transformer.transform("miau")); assertEquals(null, transformer.transform("GnRH")); assertEquals("s*", transformer.transform("s2")); assertEquals("rp*phox", transformer.transform("rp47phox")); assertEquals("u*", transformer.transform("U937")); assertEquals("u*k*", transformer.transform("U23k9")); assertEquals(null, transformer.transform(".")); }