syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"(_,"}]}
source_snippet:                         (_, Some(def_id)) if def_id.is_local() && !is_derived => {
context_before:                         (true, _) => (None, false),
context_after:                             (Some(tcx.def_span(def_id)), false)