syntax_data: {"ast_node_type":"variable","tokens":[{"end":59,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let body = self.collector.tcx.hir_body(id);
context_before:             fn visit_nested_body(&mut self, id: rustc_hir::BodyId) {
context_after:                 self.visit_body(body);