{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"ty::LateParamRegionKind::NamedAnon(_,"}]}
                ty::LateParamRegionKind::NamedAnon(_, _) => bug!("only used for pretty printing"),
                ty::LateParamRegionKind::Anon(_) => None,
            },