abstract <T2 extends CharSequence & Iterable<T2>> void acceptT2(T2 t2);

    static void verifyConsistentRawType() {
      for (Method method : RawTypeConsistencyTester.class.getDeclaredMethods()) {
        assertEquals(
            method.getReturnType(), TypeToken.of(method.getGenericReturnType()).getRawType());
        for (int i = 0; i < method.getParameterTypes().length; i++) {
          assertEquals(