R.I. Gen. Laws § 18-1-3: Law expressly applicable to trusts created by residents.

Whenever a person, who is at the time a resident of this state, subsequently creates a trust of personal property by deed, agreement, will, or otherwise, and the instrument creating the trust provides in substance that it shall be wholly or partially construed and regulated by the law of this state, the validity, construction, effect, and administration of the trust shall in whole, or to the extent provided in the instrument, be determined and governed by the law of this state without reference to the law of any other state.