syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"DefKind::Struct"}]}
source_snippet:         DefKind::Struct | DefKind::Union | DefKind::Enum => {
context_before:     match tcx.def_kind(def_id) {
context_after:             for variant in tcx.adt_def(def_id).variants() {