### Question:
LiteralCommons { public static String getRDFLangStringType() { return Namespaces.NS_RDF + "langString"; } private  LiteralCommons(); static String createCacheKey(String content, Locale language, URI type); static String createCacheKey(String content, Locale language, String type); static String createCacheKey(DateTime date, String type); static String createCacheKey(Literal l); static String createCacheKey(String content, String language, String type); static String getXSDType(Class<?> clazz); static String getRDFLangStringType();  }### Answer:
@Test public void testGetRDFLangStringType() throws Exception { Assert.assertEquals(RDF.LANGSTRING.stringValue(), LiteralCommons.getRDFLangStringType()); }