{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"self.with_lifetime_rib(LifetimeRibKind::ConcreteAnonConst(cause),"}]}
            self.with_lifetime_rib(LifetimeRibKind::ConcreteAnonConst(cause), f)
        if let ConstantHasGenerics::No(cause) = may_use_generics {
        } else {