When a devise, legacy, gift, or trust is made to or for the benefit of a class or classes of beneficiaries in this State whose members are not all ascertained or definitely ascertainable, the Probate Division of the Superior Court may in its discretion appoint a person or persons as agent or attorney to represent the beneficiaries, who shall act for them and their interests, without expense to the State, in any litigation, contest, or compromise in relation to the devise, legacy, gift, trust, will, contract, or instrument by which the same is given. (Amended 2017, No. 195 (Adj. Sess.), § 16.)