{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":".map(|(i,"}]}
                    .map(|(i, _)| fmt_span.from_inner(InnerSpan { start: i, end: i + 1 }))
                    .filter(|&(_, c)| c == '{' || c == '}')
                    .collect()