When will a court order precertification discovery in a class action?

However, before ordering precertification discovery, the court may require the plaintiff to make a prima facie showing that Rule 23(a)'s class action requirements are satisfied or to show "that discovery is likely to produce substantiation of the class allegations."⁵ Mantolete v. Bolger, 767 F.2d 1416, 1424 (9th Cir. 1985). "Absent such a showing, a trial court's refusal to allow class discovery is not an abuse of discretion." Id. (citing Doninger, 564 F.2d at 1313).