Documents in possession of officers of Executive Council
68Where documents are in the official possession, custody or power of a Member of the Executive Council or the head of a department of the public service of this Province, if the deputy head or other officer of the department has the documents in his personal possession, and is called as a witness, he is entitled, acting herein by the direction and on behalf of the Member of the Executive Council or head of the department, to object to produce the documents on the ground that they are privileged; and such objection may be taken by him in the same manner, and shall have the same effect, as if the Member of the Executive Council or head of the department were personally present and made the objection.