syntax_data: {"ast_node_type":"variable","tokens":[{"end":52,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let is_coroutine = self.coroutine.is_some();
context_before:         let needs_cleanup = self.scopes.scopes.last().is_some_and(|scope| scope.needs_cleanup());
context_after:         let unwind_to = if needs_cleanup { self.diverge_cleanup() } else { DropIdx::MAX };