{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"sym::u64"}]}
        sym::u64 => Some(UnsignedInt(UintTy::U64)),
        sym::i64 => Some(SignedInt(IntTy::I64)),
        sym::i128 => Some(SignedInt(IntTy::I128)),