CAL. PROB. CODE § 21112 : California Code - Section 21112

A condition in a transfer of a present or future interest that refers to a person's death "with" or "without" issue, or to a person's "having" or "leaving" issue or no issue, or a condition based on words of similar import, is construed to refer to that person's being dead at the time the transfer takes effect in enjoyment and to that person either having or not having, as the case may be, issue who are alive at the time of enjoyment.