syntax_data: {"ast_node_type":"variable","tokens":[{"end":71,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let invalidate_caches = needs_drop || self.coroutine.is_some();
context_before:         // non-coroutines we don't need to invalidate caches for `DropKind::Storage`.
context_after:         for scope in self.scopes.scopes.iter_mut().rev() {