This is an unofficial version of a Massachusetts General Law.
Section 1-108
For the purpose of granting consent or approval with regard to the acts or accounts of a personal representative or trustee, including relief from liability or penalty for failure to post bond or to perform other duties, and for purposes of consenting to modification or termination of a trust or to deviation from its terms,
(i) the sole holder or all co-holders of a presently exercisable general power of appointment, including one in the form of a power of amendment or revocation, or a presently exercisable power to appoint among a class of appointees which is broader than the class of those persons who would take in default of the exercise of such power,
(ii) if the court so permits in its discretion, the sole holder or all co-holders of a testamentary general power of appointment, or a testamentary power to appoint among a class of appointees which is broader than the class of those persons who would take in default of the exercise of such power, are deemed to act for beneficiaries to the extent their interests (as objects, takers in default, or otherwise) are subject to the power.