syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"self.scopes.scopes.iter().rev().nth(1).unwrap().region_scope,"}]}
source_snippet:             self.scopes.scopes.iter().rev().nth(1).unwrap().region_scope,
context_before:         let mut unwind_to = self.diverge_cleanup_target(
context_after:             DUMMY_SP,