syntax_data: {"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"NestedBodiesVisitor"}]}
source_snippet:         NestedBodiesVisitor { tcx, root_def_id: item.to_def_id(), nested_bodies: vec![] };
context_before:     let mut collector =
context_after:     collector.visit_body(body);