{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"tcx.upvars_mentioned(self.get_closure_local_def_id()).unwrap()"}]}
            tcx.upvars_mentioned(self.get_closure_local_def_id()).unwrap()
            // Safe to unwrap since we know this place is captured by the closure, therefore the closure must have upvars.
                [&self.get_root_variable()]