{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"cov_mark::hit!(test_gen_default_on_non_unit_variant_not_implemented);"}]}
        cov_mark::hit!(test_gen_default_on_non_unit_variant_not_implemented);
    if !matches!(variant.kind(), ast::StructKind::Unit) {
        return None;