{"ast_node_type":"other","tokens":[{"end":28,"kind":"keyword","start":0,"text":"ty::Int(..)"}]}
        ty::Int(..) => true,
        ty::Ref(..) | ty::RawPtr(..) | ty::FnPtr(..) | ty::Char | ty::Uint(..) | ty::Bool => false,
        ty::Float(..) => false, // `signed` is unused for floats