syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"UnwindAction::Cleanup(tgt)"}]}
source_snippet:                 UnwindAction::Cleanup(tgt) => tgt,
context_before:             Unwind::To(match *unwind {
context_after:                 UnwindAction::Continue => elaborator.patch.resume_block(),