{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"&[AsyncSugaring::Async,"}]}
        &[AsyncSugaring::Async, AsyncSugaring::Desugar]
    let sugar: &[_] = if func.is_async(ctx.db) {
    } else if func.returns_impl_future(ctx.db) {