A policy may contain additional provisions, which are not inconsistent with this code, and which are
(1) required to be so inserted by the laws of the insurer's state of domicile; or
(2) necessary, on account of the manner in which the insurer is constituted or operated, to state the rights and obligations of the parties to the contract.
[1947 c 79 § .18.15; Rem. Supp. 1947 § 45.18.15.]