(1) Avoidance may be effected by a testator only within a period of one year.
(2) In the case of avoidance for duress, the period begins on the date on which the duress ends, and in the other cases on the date on which the testator obtains knowledge of the ground for avoidance. The provisions of sections 206 and 210, governing limitation, apply accordingly to the running of the period.
(3) If, in the case set out in section 2282 (2), the legal representative did not avoid the contract of inheritance in good time, the testator himself or herself may, upon their incapacity to contract having ceased, avoid their contract of inheritance in the same way as if they had been without a legal representative.