{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"//"}]}
            // Forbid anonymous lifetimes in GAT parameters until proper semantics are decided.
        if let Some(ref gen_args) = constraint.gen_args {
            self.with_lifetime_rib(LifetimeRibKind::AnonymousReportError, |this| {