(1) As used in this section:
(a) "Residuary clause" does not include a residuary clause containing a blanket- exercise clause or a specific-exercise clause; and (b) "Will" includes a codicil and a testamentary instrument that revises another will.
(2) A residuary clause in a powerholder's will, or a comparable clause in the powerholder's revocable trust, manifests the powerholder's intent to exercise a power of appointment only if:
(a) The terms of the instrument containing the residuary clause do not manifest a contrary intent;
(b) The power is a general power exercisable in favor of the powerholder's estate;
(c) There is no gift-in-default clause or it is ineffective; and (d) The powerholder did not release the power.