syntax_data: {"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // and has no `super_visit_with` method to call.
context_before:     // The default region visitor is a no-op because `Region` is non-recursive
context_after:     fn visit_region(&mut self, r: I::Region) -> Self::Result {