Indiana Code Title 30. Trusts and Fiduciaries § 30-4-6-10

Sec. 10. (Representation by Class or Similar Interest)

Any adjudication involving the interests of persons represented by a personal representative shall be lawful and binding upon all interested persons, whether born or unborn, whether notified or not notified, and whether represented or not, provided, those interested persons are of the same class or have interests similar to the predominant interests of any person so notified or represented.