(1) A legacy that is created subject to a condition precedent or with the specification of a commencement date becomes ineffective at the end of a thirty-year period after the devolution of the inheritance, if the condition has not been satisfied or the date has not arrived before then.
(2) If the person provided for has not yet been conceived at the time of the devolution of the inheritance, or if their identity is established by an event that does not happen until after the devolution of the inheritance, then the legacy becomes ineffective at the end of a thirty-year period after the devolution of the inheritance, unless before then the person provided for is conceived or the event that determines their identity has occurred.