return defaultValue;
      } else if (iterable instanceof List) {
        return getLastInNonemptyList(Lists.cast(iterable));
      }
    }

    return Iterators.getLast(iterable.iterator(), defaultValue);
  }

  @ParametricNullness
  private static <T extends @Nullable Object> T getLastInNonemptyList(List<T> list) {
    return list.get(list.size() - 1);
  }

  /**