What is the test for manslaughter based on imperfect self-defense?

As to the murder having been a gang-style execution, defense counsel's suggestion was not evidence. As to manslaughter based on imperfect self-defense, the doctrine "may not be invoked by a defendant who, through his own wrongful conduct (e.g., the initiation of a physical assault or the commission of a felony), has created circumstances under which his adversary's attack or pursuit is legally justified. [Citations.]" (People v. Randle (2005) 35 Cal.4th 987, 1001.)