Is a plaintiff entitled to cross-examining the immunity defense in their claim?

"Thus, the plaintiff is entitled to all reasonable inferences from the facts alleged, not only those that support his claim, but also those that defeat the immunity defense." McKenna v. Wright, 386 F.3d 432, 436 (2d Cir. 2004). "If the operative complaint 'contains even one allegation of a harmful act that would constitute a violation of a clearly established constitutional right,' then plaintiff[ is] 'entitled to go forward' with [his] claims." Keates, 883 F.3d at 1235 (citation omitted).