{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"ty::GenericParamDefKind::Type"}]}
            ty::GenericParamDefKind::Type { has_default, synthetic } => {
            ty::GenericParamDefKind::Lifetime => GenericParamDefKind::Lifetime,
                GenericParamDefKind::Type { has_default: *has_default, synthetic: *synthetic }