(richTTInstant: any2stringadd[RichTTInstant]).+(other)
(richTTInstant: Ordered[RichTTInstant]).<(that)
(richTTInstant: Ordered[RichTTInstant]).<=(that)
(richTTInstant: Ordered[RichTTInstant]).>(that)
(richTTInstant: Ordered[RichTTInstant]).>=(that)
(richTTInstant: Ordered[RichTTInstant]).compare(that)
(richTTInstant: Ordered[RichTTInstant]).compareTo(that)