{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"sym::u128"}]}
            sym::u128 => ast::LitIntType::Unsigned(ast::UintTy::U128),
            sym::u64 => ast::LitIntType::Unsigned(ast::UintTy::U64),
            // `1f64` and `2f32` etc. are valid float literals, and