### Question:
Types { public static GenericArrayType arrayOf(Type componentType) { return new GenericArrayTypeImpl(componentType); } private  Types(); static String generatedJsonAdapterName(Class<?> clazz); static String generatedJsonAdapterName(String className); static @Nullable Set<? extends Annotation> nextAnnotations(
      Set<? extends Annotation> annotations, Class<? extends Annotation> jsonQualifier); static ParameterizedType newParameterizedType(Type rawType, Type... typeArguments); static ParameterizedType newParameterizedTypeWithOwner(
      Type ownerType, Type rawType, Type... typeArguments); static GenericArrayType arrayOf(Type componentType); static WildcardType subtypeOf(Type bound); static WildcardType supertypeOf(Type bound); static Class<?> getRawType(Type type); static Type collectionElementType(Type context, Class<?> contextRawType); static boolean equals(@Nullable Type a, @Nullable Type b); static Set<? extends Annotation> getFieldJsonQualifierAnnotations(
      Class<?> clazz, String fieldName);  }### Answer:
@Test public void arrayOf() { assertThat(Types.getRawType(Types.arrayOf(int.class))).isEqualTo(int[].class); assertThat(Types.getRawType(Types.arrayOf(List.class))).isEqualTo(List[].class); assertThat(Types.getRawType(Types.arrayOf(String[].class))).isEqualTo(String[][].class); }