{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"err.note(format!(\"source"}]}
            err.note(format!("source type: `{}` ({})", from, skeleton_string(from, sk_from)))
        } else {
                .note(format!("target type: `{}` ({})", to, skeleton_string(to, sk_to)));