286. If a party shows that he has been diligent and makes oath that the absent witness is necessary and that his absence is not due to any contrivance on his part, the case may be adjourned.
However, the opposite party may require him to declare under oath the facts that the defaulting witness would have stated, and may avoid the adjournment by admitting either the truth of such facts or merely that the witness would have so stated.
1965 (1st sess.), c. 80, a. 286.