(1) If a claim which will become due at a future time or a contingent or unliquidated claim becomes due or certain before the distribution of the trust estate, and if the claim has been allowed or established by a proceeding, the claim shall be paid in the same manner as presently due and absolute claims of the same class.
(2) In other cases the trustee, or, on petition of the trustee or the claimant in a special proceeding for that purpose, the court, may provide for payment as follows:
(a) if the claimant consents, the claimant may be paid the present or agreed value of the claim, taking any uncertainty into account; or
(b) arrangement for future payment, or possible payment, on the happening of the contingency or on liquidation may be made by creating a trust, giving a mortgage, obtaining a bond or security from a beneficiary, or otherwise.