{"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"Lifetime"}]}
    Lifetime { target: LifetimeRefId, bound: LifetimeRefId },
    TypeBound { target: TypeRefId, bound: TypeBound },
    ForLifetime { lifetimes: ThinVec<Name>, target: TypeRefId, bound: TypeBound },