syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"AggregateKind::Adt(_,"}]}
source_snippet:                     AggregateKind::Adt(_, _, _, _, Some(_)) => return,
context_before:                     // Do not propagate unions.
context_after:                     AggregateKind::Adt(_, variant, _, _, None) => {