20. Premature discovery.- Where the party from whom discovery of any kind or inspection is sought objects to the same or any part thereof, the court may, if satisfied that the right to the discovery or inspection sought depends on the determination of any issue or question in dispute in the suit, or that for any other reason it is desirable that any issue or question in dispute in the suit should be determined before deciding upon the right to the discovery or inspection, Order that such issue or question be determined first, and reserve the question as to the discovery or inspection. | 