"acts as a fiduciary, guarding the claims and rights of the absent class members." Ehrheart v. Verizon Wireless, 609 F.3d 590, 593 (3d Cir. 2010). The Third Circuit Court of Appeals identified nine factors that bear on this analysis in Girsh v. Jepson, 521 F.2d 153 (3d Cir. 1975): (1) the complexity and duration of the litigati