8A. Power of court to permit a person or body of persons to present opinion or to take part in the proceedings.- While trying a suit, the court may, if satisfied that a person or body of persons is interested in any question of law which is directly and substantially in issue in the suit and that it is necessary in the public interest to allow that person or body of persons to present his or its opinion that question of law, permit that person or body of persons to present such opinion and to take such part in the proceedings of the suit as the court may specify. | 
