syntax_data: {"ast_node_type":"variable","tokens":[{"end":50,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let Rvalue::Aggregate(kind, _) = rvalue
context_before:         // Converting `_0 = Poll::<Rv>::Pending` to `_0 = Poll::<()>::Pending`
context_after:             && let AggregateKind::Adt(_, _, ref mut args, _, _) = **kind