If, under the terms of any annuity contract, or policy of life insurance, or under any written agreement supplemental thereto issued by any life insurance company, the proceeds are retained by such company at maturity or otherwise, no person entitled to any part of such proceeds, or any installments of interest due or to become due thereon, shall be permitted to commute, anticipate, encumber, alienate, or assign the same, or any part thereof, if such permission is expressly withheld by the terms of such contract, policy, or supplemental agreement. If such contract, policy, or supplemental agreement so provides, no payment of interest or of principal shall be in any way subject to such person’s debts, contracts, or engagements, nor to any judicial processes to levy upon or attach the same for payment thereof. No such company shall be required to segregate such funds, but may hold them as a part of its general corporate funds.