Maps { @Deprecated @SuppressWarnings("unchecked") public static <A, B, C, D> Map4<A, B, C, D, Tuple4<A, B, C, D>> toTuple4() { return Tuple4::new; } private  Maps(); static UnaryOperator<String> toLowerCase(final Locale locale); static UnaryOperator<String> toUpperCase(Locale locale); @Deprecated static Map<T, String> mapToString(); static Function<String, E> toEnum(Class<E> enumType); @Deprecated static UnaryOperator<T> identity(); @Deprecated static Function <F, T> constant(T v); @Deprecated static Function<K, V> map(java.util.Map<K, V> m); @SuppressWarnings("unchecked") static Map2<A, B, Pair<A, B>> toPair(); @Deprecated @SuppressWarnings("unchecked") static Map3<A, B, C, Tuple3<A, B, C>> toTuple3(); @Deprecated @SuppressWarnings("unchecked") static Map4<A, B, C, D, Tuple4<A, B, C, D>> toTuple4(); @SuppressWarnings("unchecked") @Deprecated static Map5<A, B, C, D, E, Tuple5<A, B, C, D, E>> toTuple5(); @Deprecated
  static final Function<String, Integer> TO_INTEGER; static UnaryOperator<String> TO_LOWER_CASE; static UnaryOperator<String> TO_UPPER_CASE; }
@Test public void testToTuple4() { assertEquals(Tuples.tuple("123", 1, 2, 3), Maps.toTuple4().map("123", 1, 2, 3)); }