### Question:
Utils { public static Tuple2<String[], Object[]> prepareTuple4CqlDriver(Tuple2<Cells, Cells> tuple) { Cells keys = tuple._1(); Cells columns = tuple._2(); String[] names = new String[keys.size() + columns.size()]; Object[] values = new Object[keys.size() + columns.size()]; for (int k = 0; k < keys.size(); k++) { Cell cell = keys.getCellByIdx(k); names[k] = quote(cell.getCellName()); values[k] = cell.getCellValue(); } for (int v = keys.size(); v < (keys.size() + columns.size()); v++) { Cell cell = columns.getCellByIdx(v - keys.size()); names[v] = quote(cell.getCellName()); values[v] = cell.getCellValue(); } return new Tuple2<>(names, values); } private  Utils(); static T newTypeInstance(Class<T> clazz); @SuppressWarnings("unchecked") static T newTypeInstance(String className, Class<T> returnClass); static String quote(String identifier); static String singleQuote(String identifier); static String batchQueryGenerator(List<String> statements); static Tuple2<String[], Object[]> prepareTuple4CqlDriver(Tuple2<Cells, Cells> tuple); @SuppressWarnings("unchecked") static Method findSetter(String propertyName, Class entityClass, Class valueType); static boolean setFieldWithReflection(Object object, String fieldName, Object fieldValue); @SuppressWarnings("unchecked") static Method findGetter(String propertyName, Class entityClass); static InetAddress inetAddressFromLocation(String location); static Field[] getAllFields(Class clazz); static List<String> removeAddressPort(List<String> stringList); static String splitListByComma(List<String> hosts); static IExtractor<T, S> getExtractorInstance(S config); static Object castNumberType(Object object, Class clazz); static Object castingUtil(String value, Class classCasting); static W initConfig(S config, W deepJobConfig); static T cloneObjectWithParents(T t); static ExecutorService newBlockingFixedThreadPoolExecutor(int nThreads, int queueSize);  }### Answer:
@Test public void testPrepareTuple4CqlDriver() throws Exception { }