(a) Judicial proceeding.--In a judicial proceeding involving a trust matter, an order or decree of the court that binds the representative is binding upon a person, class of persons or both represented in accordance with section 7723 (relating to representatives and persons represented) if:
(1) the trustee notifies the representative in writing whom he represents and the representative does not decline the representation as provided in section 7725 (relating to notice of representation);
(2) a petitioner, whether or not a trustee, avers the representation in a petition before the court, the representative is the petitioner or a respondent over whom the court has jurisdiction and, if a respondent, the representative does not decline the representation in a responsive pleading filed and served as required by law; or
(3) the representative has signed a certification of representation described in subsection (d) and has not rescinded the certification on the court's records by the time the court acts upon the petition.
(b) Nonjudicial resolution.--In a nonjudicial resolution of a trust matter, notice to, the consent or approval of or the waiver or release by the representative is binding upon a person, class of persons or both represented in accordance with section 7723 if:
(1) the trustee notifies the representative in writing whom he represents and the representative does not decline the representation as provided in section 7725; or
(2) the representative has signed a certification of representation described in subsection (d) and has not rescinded the certification in a writing received by the trustee by the time of the nonjudicial settlement.
(c) Permissible consideration.--In making decisions, a representative may consider the general benefit accruing to the living members of the family of the person represented.
(d) Certification of representation.--
(1) A certification signed by the representative describing his representation of another person, class of persons or both in accordance with section 7723 may be filed with:
(i) the court, in the case of a judicial proceeding; or
(ii) the trustee, in the case of a nonjudicial resolution of a trust matter.
(2) Subject to paragraph (3), a certification of representation may be rescinded in a writing signed by the representative and filed with:
(i) the court at any time before the court acts in reliance upon the certification, in the case of a judicial proceeding; or
(ii) the trustee before a trust matter is resolved without application to the court.
(3) A representative's rescission of a certification of representation shall have no effect upon actions taken by a trustee in good faith reliance upon the certification.