{"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":".filter_map(move"}]}
            .filter_map(move |tts| {
            .split(|tt| matches!(tt, tt::TtElement::Leaf(tt::Leaf::Punct(Punct { char: ',', .. }))))
                let span = tts.flat_tokens().first()?.first_span();