{"ast_node_type":"other","tokens":[{"end":28,"kind":"keyword","start":0,"text":".map(|variant|"}]}
            .map(|variant| {
            .filter(|&v| !(unify_fieldless_variants && v.data.fields().is_empty()))
                // A single arm has form (&VariantK, &VariantK, ...) => BodyK