code: public static <F, S> TryType<F, S> failure(
      final F x)
    {
      return Failure.failure(x);
    }
docs: Fail trivially, yielding {@code x}.
  
  @param x   The result
  @param <F> The type of failure values.
  @param <S> The type of success values.
  
  @return A computation that yields {@code x}.