2379. The designation or revocation of an annuitant, other than the person who furnished the capital of the annuity, is governed by the rules respecting stipulation for another.
However, the designation or revocation of an annuitant, in respect of annuities transacted by insurers or of retirement plan annuities, is governed by those rules respecting the contract of insurance which relate to beneficiaries and subrogated holders, adapted as required.