discussed Cited "see" Jernard Griggs v. S.G.E. Management, L.L.C. Ctr. , 729 F.3d 239 , 244 (3d Cir. 2013) ). 39 Id. at 1715 40 Id. at 1712. 41 Keena , 886 F.3d at 362 . 42 Id. 43 Id. at 364 . 44 Id. at 365 . 45 Id. 46 See Microsoft , 137 S.Ct. at 1707 ("The tactic would undermine § 1291's firm finality principle, designed to guard against piecemeal appeals, and subvert the balanced solution Rule 23(f) put in place for immediate review of class-action orders."); id. at 1715 ("Plaintiffs in putative class actions cannot transform a tentative interlocutory order ... into a final judgment within the meaning of § 1291 simply by dismissing their claims with pre…