What is the test for qualified immunity in the context of sexual assault cases?

"The doctrine of qualified immunity protects government officials 'from liability for civil damages insofar as their conduct does not violate clearly established statutory or constitutional rights of which a reasonable person would have known.'" Pearson v. Callahan, 555 U.S. 223, 231 (2009) (quoting Harlow v. Fitzgerald, 457 U.S. 800, 818 (1982)). The purpose of qualified immunity is to strike a balance between the competing "need to hold public officials accountable when they exercise power irresponsibly and the need to shield officials from harassment, distraction, and liability when they perform their duties reasonably." Id.