Fiduciaries, beneficiaries and others. Any person interested as or through an

executor, administrator, trustee, guardian, conservator or other fiduciary, creditor, devisee, legatee, heir, next of kin or cestui que trust, in the administration of a trust or the estate of a decedent, insolvent, an infant or other person for whom a guardian, or conservator has been appointed, may obtain a declaration of rights or legal relations for any of the following reasons: 1.1104(1) To ascertain any class of creditors, devisees, legatees, heirs, next of kin or others. 1.1104(2) To direct executors, administrators, guardians, conservators, fiduciaries, to do or abstain from doing any particular act in their fiduciary capacity. trustees or other 1.1104(3) To determine any question arising in the administration of the estate, guardianship, conservatorship or trust, including questions of construction of wills and other writings. [Report 1943; October 31, 1997, effective January 24, 1998; November 9, 2001, effective February 15, 2002]