syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"(_,"}]}
source_snippet:                         (_, _, true, _) => {}
context_before:                     match (has_impl, is_derived, structural_partial_eq, non_blanket_impl) {
context_after:                         (true, false, _, Some(def_id)) if def_id.is_local() => {